Engineering Physics

A glass window may be broken by a distant explosion due to __________

1. Interference
2. Resonance
3. Diffraction
4. Polarization

Displacement and velocity graph of SHM is __________

1. Parabolic
2. Circular
3. Elliptical
4. Linear

For which angle of scattering is the Compton shift maximum?

1. 90°
2. 180°
3. 0°
4. None of the above

Which characterizes a photon?

1. Both energy and momentum
2. Momentum, but not energy
3. Energy, but not momentum
4. Neither energy nor momentum

Write the name of the particles produced in pair production?

1. Electron and proton
2. Positron and electron
3. Proton and neutron
4. Neutrino and neutron

Ruby LASER is a

1. 3 level gas laser
2. 4 level solid state laser
3. Semiconductor laser
4. 3 level solid state laser

Gauss divergence theorem converts __________

1. Line integral to volume integral
2. Surface integral to volume integral
3. Surface integral to line integral
4. Surface integral to volume integral & vice versa

Which of the following laws do not form a Maxwell equation?

1. Gauss's Law of electrostatics
2. Faraday's law of electromagnetic induction
3. Ampere's circuital Law
4. None of the above

The relationship describing the angle at which a beam of X-rays of a particular wavelength diffracts from a crystalline surface is __________

1. Snell's law
2. Fresnel's law
3. Bragg's law
4. None of the above

In single slit diffraction the ratio of intensities of first secondary maximum to the central maximum is __________

1. 1/28
2. 1/22
3. 1/121
4. 1/5

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

Explain Coriolis effect and its applications in weather system.

What is damping? 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.

What is a diffraction grating? Derive the expression for resultant intensity. Discuss the diffraction pattern due to a grating with intensities distribution curve.

Write a short note on Michelson's interferometer.

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

State and explain Bloch's theorem for a particle in a periodic potential.

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

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

State Poynting theorem and define Poynting vector. Use Maxwell's equations to derive the theorem.

Write down four Maxwell's equations in differential form. Name the terms.

Write down Schrödinger's wave equation for a particle in one dimensional potential well given by:

Solve it to obtain the energy eigen values.

Derive Einstein's photo-electric equation.

Resonance

Polarization mechanisms in dielectrics

Compton scattering

Newton's ring experiment