Polarization of Light MCQ Questions and Answers for Practice

1. A 20 cm long tube containing 48 c.c. of sugar rotes the plane of polarization by 11 degree. If the specific rotation of sugar is 66 degree, calculate the mass of sugar solution.

1. 16 gm
2. 10 gm
3. 8 gm
4. 4 gm

2. A dichroic crystal converts UPL to PPL

1. refraction
2. selective absorption
3. reflection
4. Double refraction

3. A half wave plate is used to add a phase difference of......................O ray and E ray

1. 2 pi
2. pi/2
3. pi

4. A He - Ne laser is a

1. Three level
2. One level
3. Two level
4. Four level

5. A hologram records.............of light

1. frequency
2. frequency and Phase
3. Intensity
4. Intensity and phase

6. A LCD is a device which is uses the phenomenon of

1. scattering
2. dispersion
3. optical activity
4. refraction

7. A optically active material

1. changes the direction of reflected light
2. changes the direction of the plane of polarization
3. changes the direction of propagation of light
4. changes the direction of reflected light

8. A polarizer and analyzer are oriented so that he amount of transmitted light is maximum .through what angle should either be the turned so that the intensity transmitted light is reduced to 0.25 time maximum intensity.

1. 150 degree
2. 160 degree
3. 90 degree
4. 60 degree

9. A quarter of a wavelength is equal to how many degrees of phase?

1. 60
2. 180
3. 90
4. 45

10. A semiconductor diode Laser is

1. Two level
2. one level
3. Four level
4. Three level

11. An optical fiber cable acts as the principle of

1. reflection
2. total internal reflection
3. Double refraction
4. Total external refraction

12. Dextrorotatory optically active substance rotates the plane of vibration?

1. By 180 degree
2. none of these
3. In clockwise direction
4. In anticlockwise direction

13. Electric field vector vibrates in only one plane and perpendicular to the direction of propagation in.............light

1. both plane polarised & unpolarised
2. neither plane polarised & nor unpolarised
3. plane polarised
4. unpolarised

14. How many principle sections of uniaxial crystal have?

1. 5
2. 2
3. 6
4. 3

15. How much phase change is introduced by a quarter wave plate between ordinary and extra ordinary ray.

1. pi/2
2. pi/4
3. pi
4. 2 pi