PYQs

Engineering Physics

7 papers · 100201, 100110

2025100201

B.Tech 2nd Semester Examination, 2025

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option / answer the following (Any seven question only):

Ask AI
  1. Q1.1

    For which angle of scattering is the Compton shift maximum?

    a)

    0∘0^{\circ}

    b)

    90∘90^{\circ}

    c)

    180∘180^{\circ}

    d)

    none of the above

    Ask AI
  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

    Ask AI
  3. Q1.3

    Critical angle depends on

    a)

    Refractive Index of rarer medium

    b)

    Refractive Index of denser medium

    c)

    Refractive Index of both rarer and denser medium

    d)

    Refractive Index of none

    Ask AI
  4. Q1.4

    Diamagnetic materials are

    a)

    Weakly repelled by magnetic field

    b)

    Strongly repelled by magnetic field

    c)

    Weakly attracted by magnetic field

    d)

    Strongly attracted by magnetic field

    Ask AI
  5. Q1.5

    Write down time-independent Schrödinger's wave equation in 1-dimension.

    Ask AI
  6. Q1.6

    Young's double slit experiment was performed in a laboratory by taking monochromatic blue, orange and red light and fringe widths were obtained as βB,βO,βR\beta_{B}, \beta_{O}, \beta_{R} respectively. Other variables had been kept constants. Write down the fringe widths in decreasing order.

    Ask AI
  7. Q1.7

    Write down the Maxwell's equation which explains the non-existence of singular magnetic poles.

    Ask AI
  8. Q1.8

    What is Lorentz force?

    Ask AI
  9. Q1.9

    The maximum velocity and maximum acceleration in a simple harmonic oscillator are numerically equal. What is the time period?

    Ask AI
  10. Q1.10

    What is the ratio of intensities of maxima and minima in interference if the intensity ratio is 9:1?

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    Mention the forces acting in Forced Harmonic Oscillator. Set its differential equation. Derive expressions for the phase difference and resultant amplitude.

    Ask AI
  2. Q2.2

    What is Coriolis acceleration? Explain its applications in weather system.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the structure and working of He-Ne LASER. Draw its energy band diagram.

    Ask AI
  2. Q3.2

    What is population inversion? What is its importance in Lasing action?

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Derive an expression for resultant intensity in Fraunhoffer's single slit diffraction. Mention the conditions for maxima and minima. Draw the intensities distribution curve.

    Ask AI
  2. Q4.2

    Write a short note on Michelson's interferometer.

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    What is ferromagnetic hysteresis? Draw the B-H plot and show the coercive field and remanent magnetisation in the plot.

    Ask AI
  2. Q5.2

    Derive an expression for torque on a magnetic dipole inside a uniform magnetic field. Define magnetic moment.

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

    Ask AI
  2. Q6.2

    Draw the total Energy (E) vs. Wave number (k) curve for an electron in 1-D lattice.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    What is Compton Effect? Give the expression for Compton shift. How does the shift depend upon the angle of scattering?

    Ask AI
  2. Q7.2

    Derive Einstein's photo-electric equation. Plot the variation of stopping potential vs frequency. Define threshold frequency.

    Ask AI

Q.8 Solve this question :

Ask AI
  1. Q8.1

    Write down Schrödinger's wave equation for a particle inside 1-D Box given by V(x)=0V(x)=0 for 0<x<L0 < x < L and V(x)=∞V(x)=\infty for x<0x < 0 and x>Lx> L. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

    Ask AI

Q.9 Write short note on any two of the following:

Ask AI

2025V2100201

B.Tech 2nd Semester Examination, 2025

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option / answer the following (Any seven question only):

Ask AI
  1. Q1.1

    For which angle of scattering is the Compton shift maximum?

    a)

    0∘0^{\circ}

    b)

    90∘90^{\circ}

    c)

    180∘180^{\circ}

    d)

    none of the above

    Ask AI
  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

    Ask AI
  3. Q1.3

    Critical angle depends on

    a)

    Refractive Index of rarer medium

    b)

    Refractive Index of denser medium

    c)

    Refractive Index of both rarer and denser medium

    d)

    Refractive Index of none

    Ask AI
  4. Q1.4

    Diamagnetic materials are

    a)

    Weakly repelled by magnetic field

    b)

    Strongly repelled by magnetic field

    c)

    Weakly attracted by magnetic field

    d)

    Strongly attracted by magnetic field

    Ask AI
  5. Q1.5

    Write down time-independent Schrödinger's wave equation in 1-dimension.

    Ask AI
  6. Q1.6

    Young's double slit experiment was performed in a laboratory by taking monochromatic blue, orange and red light and fringe widths were obtained as βB,βO,βR\beta_{B}, \beta_{O}, \beta_{R} respectively. Other variables had been kept constants. Write down the fringe widths in decreasing order.

    Ask AI
  7. Q1.7

    Write down the Maxwell's equation which explains the non-existence of singular magnetic poles.

    Ask AI
  8. Q1.8

    What is Lorentz force?

    Ask AI
  9. Q1.9

    The maximum velocity and maximum acceleration in a simple harmonic oscillator are numerically equal. What is the time period?

    Ask AI
  10. Q1.10

    What is the ratio of intensities of maxima and minima in interference if the intensity ratio is 9:1?

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    Mention the forces acting in Forced Harmonic Oscillator. Set its differential equation. Derive expressions for the phase difference and resultant amplitude.

    Ask AI
  2. Q2.2

    What is Coriolis acceleration? Explain its applications in weather system.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the structure and working of He-Ne LASER. Draw its energy band diagram.

    Ask AI
  2. Q3.2

    What is population inversion? What is its importance in Lasing action?

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Derive an expression for resultant intensity in Fraunhoffer's single slit diffraction. Mention the conditions for maxima and minima. Draw the intensities distribution curve.

    Ask AI
  2. Q4.2

    Write a short note on Michelson's interferometer.

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    What is ferromagnetic hysteresis? Draw the B-H plot and show the coercive field and remanent magnetisation in the plot.

    Ask AI
  2. Q5.2

    Derive an expression for torque on a magnetic dipole inside a uniform magnetic field. Define magnetic moment.

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

    Ask AI
  2. Q6.2

    Draw the total Energy (E) vs. Wave number (k) curve for an electron in 1-D lattice.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    What is Compton Effect? Give the expression for Compton shift. How does the shift depend upon the angle of scattering?

    Ask AI
  2. Q7.2

    Derive Einstein's photo-electric equation. Plot the variation of stopping potential vs frequency. Define threshold frequency.

    Ask AI

Q.8 Solve this question :

Ask AI
  1. Q8.1

    Write down Schrödinger's wave equation for a particle inside 1-D Box given by V(x)=0V(x)=0 for 0 &lt; x &lt; L and V(x)=∞V(x)=\infty for x &lt; 0 and x&gt; L. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

    Ask AI

Q.9 Write short note on any two of the following:

Ask AI
  1. Q9.1

    • 3-level LASER
    • Amplitude Resonance
    • Electronic Polarization in dielectrics
    a)

    3-level LASER

    b)

    Amplitude Resonance

    c)

    Electronic Polarization in dielectrics

    Ask AI

2025V3100201

B.Tech 2nd Semester Examination, 2025

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option / answer the following (Any seven question only):

Ask AI
  1. Q1.1

    For which angle of scattering is the Compton shift maximum?

    a)

    0∘0^{\circ}

    b)

    90∘90^{\circ}

    c)

    180∘180^{\circ}

    d)

    none of the above

    Ask AI
  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

    Ask AI
  3. Q1.3

    Critical angle depends on

    a)

    Refractive Index of rarer medium

    b)

    Refractive Index of denser medium

    c)

    Refractive Index of both rarer and denser medium

    d)

    Refractive Index of none

    Ask AI
  4. Q1.4

    Diamagnetic materials are

    a)

    Weakly repelled by magnetic field

    b)

    Strongly repelled by magnetic field

    c)

    Weakly attracted by magnetic field

    d)

    Strongly attracted by magnetic field

    Ask AI
  5. Q1.5

    Write down time-independent Schrödinger's wave equation in 1-dimension.

    Ask AI
  6. Q1.6

    Young's double slit experiment was performed in a laboratory by taking monochromatic blue, orange and red light and fringe widths were obtained as βB,βO,βR\beta_{B}, \beta_{O}, \beta_{R} respectively. Other variables had been kept constants. Write down the fringe widths in decreasing order.

    Ask AI
  7. Q1.7

    Write down the Maxwell's equation which explains the non-existence of singular magnetic poles.

    Ask AI
  8. Q1.8

    What is Lorentz force?

    Ask AI
  9. Q1.9

    The maximum velocity and maximum acceleration in a simple harmonic oscillator are numerically equal. What is the time period?

    Ask AI
  10. Q1.10

    What is the ratio of intensities of maxima and minima in interference if the intensity ratio is 9:1?

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    Mention the forces acting in Forced Harmonic Oscillator. Set its differential equation. Derive expressions for the phase difference and resultant amplitude.

    Ask AI
  2. Q2.2

    What is Coriolis acceleration? Explain its applications in weather system.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the structure and working of He-Ne LASER. Draw its energy band diagram.

    Ask AI
  2. Q3.2

    What is population inversion? What is its importance in Lasing action?

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Derive an expression for resultant intensity in Fraunhoffer's single slit diffraction. Mention the conditions for maxima and minima. Draw the intensities distribution curve.

    Ask AI
  2. Q4.2

    Write a short note on Michelson's interferometer.

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    What is ferromagnetic hysteresis? Draw the B-H plot and show the coercive field and remanent magnetisation in the plot.

    Ask AI
  2. Q5.2

    Derive an expression for torque on a magnetic dipole inside a uniform magnetic field. Define magnetic moment.

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

    Ask AI
  2. Q6.2

    Draw the total Energy (E) vs. Wave number (k) curve for an electron in 1-D lattice.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    What is Compton Effect? Give the expression for Compton shift. How does the shift depend upon the angle of scattering?

    Ask AI
  2. Q7.2

    Derive Einstein's photo-electric equation. Plot the variation of stopping potential vs frequency. Define threshold frequency.

    Ask AI

Q.8 Solve this question :

Ask AI
  1. Q8.1

    Write down Schrödinger's wave equation for a particle inside 1-D Box given by V(x)=0V(x)=0 for 0 &lt; x &lt; L and V(x)=∞V(x)=\infty for x &lt; 0 and x&gt; L. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

    Ask AI

Q.9 Write short note on any two of the following:

Ask AI
  1. Q9.1

    • 3-level LASER
    • Amplitude Resonance
    • Electronic Polarization in dielectrics
    a)

    3-level LASER

    b)

    Amplitude Resonance

    c)

    Electronic Polarization in dielectrics

    Ask AI

2025V4100201

B.Tech 2nd Semester Examination, 2025

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option / answer the following (Any seven question only):

Ask AI
  1. Q1.1

    For which angle of scattering is the Compton shift maximum?

    a)

    0∘0^{\circ}

    b)

    90∘90^{\circ}

    c)

    180∘180^{\circ}

    d)

    none of the above

    Ask AI
  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

    Ask AI
  3. Q1.3

    Critical angle depends on

    a)

    Refractive Index of rarer medium

    b)

    Refractive Index of denser medium

    c)

    Refractive Index of both rarer and denser medium

    d)

    Refractive Index of none

    Ask AI
  4. Q1.4

    Diamagnetic materials are

    a)

    Weakly repelled by magnetic field

    b)

    Strongly repelled by magnetic field

    c)

    Weakly attracted by magnetic field

    d)

    Strongly attracted by magnetic field

    Ask AI
  5. Q1.5

    Write down time-independent Schrödinger's wave equation in 1-dimension.

    Ask AI
  6. Q1.6

    Young's double slit experiment was performed in a laboratory by taking monochromatic blue, orange and red light and fringe widths were obtained as $ \beta_{B}, \beta_{O}, \beta_{R} $ respectively. Other variables had been kept constants. Write down the fringe widths in decreasing order.

    Ask AI
  7. Q1.7

    Write down the Maxwell's equation which explains the non-existence of singular magnetic poles.

    Ask AI
  8. Q1.8

    What is Lorentz force?

    Ask AI
  9. Q1.9

    The maximum velocity and maximum acceleration in a simple harmonic oscillator are numerically equal. What is the time period?

    Ask AI
  10. Q1.10

    What is the ratio of intensities of maxima and minima in interference if the intensity ratio is 9:1?

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    Mention the forces acting in Forced Harmonic Oscillator. Set its differential equation. Derive expressions for the phase difference and resultant amplitude.

    Ask AI
  2. Q2.2

    What is Coriolis acceleration? Explain its applications in weather system.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the structure and working of He-Ne LASER. Draw its energy band diagram.

    Ask AI
  2. Q3.2

    What is population inversion? What is its importance in Lasing action?

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Derive an expression for resultant intensity in Fraunhoffer's single slit diffraction. Mention the conditions for maxima and minima. Draw the intensities distribution curve.

    Ask AI
  2. Q4.2

    Write a short note on Michelson's interferometer.

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    What is ferromagnetic hysteresis? Draw the B-H plot and show the coercive field and remanent magnetisation in the plot.

    Ask AI
  2. Q5.2

    Derive an expression for torque on a magnetic dipole inside a uniform magnetic field. Define magnetic moment.

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

    Ask AI
  2. Q6.2

    Draw the total Energy (E) vs. Wave number (k) curve for an electron in 1-D lattice.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    What is Compton Effect? Give the expression for Compton shift. How does the shift depend upon the angle of scattering?

    Ask AI
  2. Q7.2

    Derive Einstein's photo-electric equation. Plot the variation of stopping potential vs frequency. Define threshold frequency.

    Ask AI

Q.8 Solve this question :

Ask AI
  1. Q8.1

    Write down Schrödinger's wave equation for a particle inside 1-D Box given by $ V(x)=0 $ for $ 0 < x < L $ and $ V(x)=\infty $ for $ x < 0 $ and $ x> L $. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

    Ask AI

Q.9 Write short note on any two of the following:

Ask AI

2025V5100201

B.Tech 2nd Semester Examination, 2025

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option / answer the following (Any seven question only):

Ask AI
  1. Q1.1

    For which angle of scattering is the Compton shift maximum?

    a)

    0∘0^{\circ}

    b)

    90∘90^{\circ}

    c)

    180∘180^{\circ}

    d)

    none of the above

    Ask AI
  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

    Ask AI
  3. Q1.3

    Critical angle depends on

    a)

    Refractive Index of rarer medium

    b)

    Refractive Index of denser medium

    c)

    Refractive Index of both rarer and denser medium

    d)

    Refractive Index of none

    Ask AI
  4. Q1.4

    Diamagnetic materials are

    a)

    Weakly repelled by magnetic field

    b)

    Strongly repelled by magnetic field

    c)

    Weakly attracted by magnetic field

    d)

    Strongly attracted by magnetic field

    Ask AI
  5. Q1.5

    Write down time-independent Schrödinger's wave equation in 1-dimension.

    Ask AI
  6. Q1.6

    Young's double slit experiment was performed in a laboratory by taking monochromatic blue, orange and red light and fringe widths were obtained as $ \beta_{B}, \beta_{O}, \beta_{R} $ respectively. Other variables had been kept constants. Write down the fringe widths in decreasing order.

    Ask AI
  7. Q1.7

    Write down the Maxwell's equation which explains the non-existence of singular magnetic poles.

    Ask AI
  8. Q1.8

    What is Lorentz force?

    Ask AI
  9. Q1.9

    The maximum velocity and maximum acceleration in a simple harmonic oscillator are numerically equal. What is the time period?

    Ask AI
  10. Q1.10

    What is the ratio of intensities of maxima and minima in interference if the intensity ratio is 9:1?

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    Mention the forces acting in Forced Harmonic Oscillator. Set its differential equation. Derive expressions for the phase difference and resultant amplitude.

    Ask AI
  2. Q2.2

    What is Coriolis acceleration? Explain its applications in weather system.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the structure and working of He-Ne LASER. Draw its energy band diagram.

    Ask AI
  2. Q3.2

    What is population inversion? What is its importance in Lasing action?

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Derive an expression for resultant intensity in Fraunhoffer's single slit diffraction. Mention the conditions for maxima and minima. Draw the intensities distribution curve.

    Ask AI
  2. Q4.2

    Write a short note on Michelson's interferometer.

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    What is ferromagnetic hysteresis? Draw the B-H plot and show the coercive field and remanent magnetisation in the plot.

    Ask AI
  2. Q5.2

    Derive an expression for torque on a magnetic dipole inside a uniform magnetic field. Define magnetic moment.

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

    Ask AI
  2. Q6.2

    Draw the total Energy (E) vs. Wave number (k) curve for an electron in 1-D lattice.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    What is Compton Effect? Give the expression for Compton shift. How does the shift depend upon the angle of scattering?

    Ask AI
  2. Q7.2

    Derive Einstein's photo-electric equation. Plot the variation of stopping potential vs frequency. Define threshold frequency.

    Ask AI

Q.8 Solve this question :

Ask AI
  1. Q8.1

    Write down Schrödinger's wave equation for a particle inside 1-D Box given by $ V(x)=0 $ for $ 0 < x < L $ and $ V(x)=\infty $ for $ x < 0 $ and $ x> L $. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

    Ask AI

Q.9 Write short note on any two of the following:

Ask AI
  1. Q9.1

    a)

    3-level LASER

    b)

    Amplitude Resonance

    c)

    Electronic Polarization in dielectrics

    Ask AI

2024100110

B.Tech 1st Semester Examination, 2024

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option/write the answer of the following (Any seven):

Ask AI
  1. Q1.1

    Which of the following principle explains that electrons do not exist inside the nucleus?

    a)

    Heisenberg’s uncertainty principle

    b)

    Einstein’s photo-electric effect

    c)

    Huygen’s principle

    d)

    All the above

    Ask AI
  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

    Ask AI
  3. Q1.3

    Which phenomenon explains the particle nature of light?

    a)

    Photoelectric effect

    b)

    Pair production

    c)

    Blackbody radiation

    d)

    All the above

    Ask AI
  4. Q1.4

    Write down four applications of LASER in its fields of engineering.

    Ask AI
  5. Q1.5

    Define Fermi Energy.

    Ask AI
  6. Q1.6

    Write down time-dependent Schrödinger’s wave equation in 1-dimension.

    Ask AI
  7. Q1.7

    Show graphically the intensity distribution in Fraunhoffer diffraction due to a single slit.

    Ask AI
  8. Q1.8

    What is Lorentz force?

    Ask AI
  9. Q1.9

    Show that displacement vs. velocity graph of SHM is elliptical.

    Ask AI
  10. Q1.10

    Write down condition for the validity of ampere’s circuital law?

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    Derive the differential equation for Damped Harmonic Oscillator. Give its solution. Differentiate between under damped, over damped and critically damped harmonic oscillation including graphical representation.

    Ask AI
  2. Q2.2

    Explain Coriolis effect and its applications in weather system.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the structure and working of Ruby LASER. Draw and explain its energy band diagram.

    Ask AI
  2. Q3.2

    Write notes on population inversion in LASER.

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    What is diffraction grating? Discuss the diffraction pattern due to a grating with intensities distribution curve.

    Ask AI
  2. Q4.2

    Derive an expression for the fringe width in Young’s double slit experiment.

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    Write down Schrondiger equation for a particle in 1-D box given by $ V(x) = 0, \quad 0 < x < L $ and $ V(x)=\infty, \quad x < 0 \text{ and } x> L $. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

    Ask AI
  2. Q5.2

    What is Compton effect? Explain how does Compton shift depend on angle of scattering?

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

    Ask AI
  2. Q6.2

    Draw the total energy (E) vs. wave number (k) curve for an electron in a solid.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    State Biot-Savart’s law. Apply it to derive an expression for magnetic flux density at the centre of a circular coil carrying current.

    Ask AI
  2. Q7.2

    Distinguish among dia, para and ferro magnetic materials on the basis of orientation of atomic magnetic moments under the external magnetic fields.

    Ask AI

Q.8 Solve both questions :

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  1. Q8.1

    Define Poynting vector. Use Maxwell’s equations to derive Poynting theorem.

    Ask AI
  2. Q8.2

    State Faraday’s laws and Lenz’s law of electromagnetic induction. Write down the corresponding Maxwell’s equation.

    Ask AI

Q.9 Write notes on any two of the following:

Ask AI
  1. Q9.1

    a)

    Einstein’s photo-electric equation

    b)

    Polarization mechanisms in dielectrics

    c)

    Resonance

    Ask AI

2024V2100110

B.Tech 1st Semester Examination, 2024

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option/write the answer of the following (Any seven):

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  1. Q1.1

    Which of the following principle explains that electrons do not exist inside the nucleus?

    a)

    Heisenberg’s uncertainty principle

    b)

    Einstein’s photo-electric effect

    c)

    Huygen’s principle

    d)

    All the above

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  2. Q1.2

    Which of the following is the characteristic of wave function?

    a)

    Continuous

    b)

    Single valued

    c)

    Normalizable

    d)

    All of the above

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  3. Q1.3

    Which phenomenon explains the particle nature of light?

    a)

    Photoelectric effect

    b)

    Pair production

    c)

    Blackbody radiation

    d)

    All the above

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  4. Q1.4

    Write down four applications of LASER in its fields of engineering.

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  5. Q1.5

    Define Fermi Energy.

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  6. Q1.6

    Write down time-dependent Schrödinger’s wave equation in 1-dimension.

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  7. Q1.7

    Show graphically the intensity distribution in Fraunhoffer diffraction due to a single slit.

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  8. Q1.8

    What is Lorentz force?

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  9. Q1.9

    Show that displacement vs. velocity graph of SHM is elliptical.

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  10. Q1.10

    Write down condition for the validity of ampere’s circuital law?

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Q.2 Solve both questions :

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  1. Q2.1

    Derive the differential equation for Damped Harmonic Oscillator. Give its solution. Differentiate between under damped, over damped and critically damped harmonic oscillation including graphical representation.

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  2. Q2.2

    Explain Coriolis effect and its applications in weather system.

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Q.3 Solve both questions :

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  1. Q3.1

    Discuss the structure and working of Ruby LASER. Draw and explain its energy band diagram.

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  2. Q3.2

    Write notes on population inversion in LASER.

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Q.4 Solve both questions :

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  1. Q4.1

    What is diffraction grating? Discuss the diffraction pattern due to a grating with intensities distribution curve.

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  2. Q4.2

    Derive an expression for the fringe width in Young’s double slit experiment.

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Q.5 Solve both questions :

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  1. Q5.1

    Write down Schrondiger equation for a particle in 1-D box given by $ V(x) = 0, \quad 0 < x < L andand V(x)=\infty, \quad x < 0 \text{ and } x> L $. Solve it to obtain energy eigen values. Show that energy eigen values are discrete.

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  2. Q5.2

    What is Compton effect? Explain how does Compton shift depend on angle of scattering?

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Q.6 Solve both questions :

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  1. Q6.1

    Discuss Kronig-Penney model for the motion of an electron in a periodic potential and the existence of allowed and forbidden energy bands.

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  2. Q6.2

    Draw the total energy (E) vs. wave number (k) curve for an electron in a solid.

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Q.7 Solve both questions :

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  1. Q7.1

    State Biot-Savart’s law. Apply it to derive an expression for magnetic flux density at the centre of a circular coil carrying current.

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  2. Q7.2

    Distinguish among dia, para and ferro magnetic materials on the basis of orientation of atomic magnetic moments under the external magnetic fields.

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Q.8 Solve both questions :

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  1. Q8.1

    Define Poynting vector. Use Maxwell’s equations to derive Poynting theorem.

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  2. Q8.2

    State Faraday’s laws and Lenz’s law of electromagnetic induction. Write down the corresponding Maxwell’s equation.

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Q.9 Write notes on any two of the following:

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  1. Q9.1

    • Einstein’s photo-electric equation
    • Polarization mechanisms in dielectrics
    • Resonance
    a)

    Einstein’s photo-electric equation

    b)

    Polarization mechanisms in dielectrics

    c)

    Resonance

    Ask AI

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