Engineering Physics II Practice Test 1

1. Which of the following is used for the formation of holograms?

Infrared

Lasers

X-ray

Visible Light

2. If the phase difference between two rays is π/2 and the angle of incidence is not equal to π/4, the emergent light is __________

Non-Polarized

Circularly Polarized

Elliptically Polarized

Linearly Polarized

3. The lens power is 1D, what will be its focal length in centimeter?

100

0.91

0.1

4. When viewing a hologram print, the image changes as you move around.

False

True

5. The product of the Geometric Length of the path light follows through the system, and the refractive index of the medium is known as __________

Optical Path Difference

Fermat Path

Optical Path

Ray Path

6. When an electron jumps from an excited state to ground state it __________

Emits a photon having energy 13.6 eV

Emits a photon having energy the same as the energy difference between the two states

Absorbs a photon having energy the same as the energy difference between the two states

Absorbs a photon having energy 13.6 eV

7. A plate which induces the desired amount of phase difference between two rays is known as ___________

Retardation Plates

Phasor plates

Quartz plates

Polaroid

8. An electromagnetic beam has an intensity 28 W/m² and is linearly polarized vertically. What is the intensity of the transmitted beam, if the angle of incidence on the polaroid is 45o with the vertical?

16 Wm^-1

12 Wm^-1

14 Wm^-1

10 Wm^-1

9. Unpolarized light is incident on a plane glass surface. What should be the angle of incidence such that the reflect and refracted rays are perpendicular to each other?

45°

60°

57°

90°

10. Find the ratio of mean deviation produced, if the ratio of dispersive power of the material of two prism are 2:3 and ratio of angular dispersions produced by them is 1:2.

3:4

3:1

4:3

1:3