Polarization of Light Multiple Choice Questions and Answers for Practice

16. If a hologram is illuminated by white light it will form

1. Colorful image
2. will not form image
3. red image in black and white
4. Single color image

17. If the angle between the axis of Polarizer and analyser is 300, the intensity of light transmitted by analyser is........times the intensity transmitted by the polarizer

1. 4-Mar
2. 4-Jan
3. Zero
4. 2-Jan

18. If the angle between the axis of Polarizer and analyser is 45 degree , the intensity of light transmitted by analyser is...................times the intensity transmitted by the polarizer

1. 4-Mar
2. 4-Jan
3. Zero
4. 2-Jan

19. If the angle between the axis of Polarizer and analyser is 90 degree, the intensity of light transmitted by analyser is.............times the intensity transmitted by the polarizer

1. 4-Mar
2. 4-Jan
3. Zero
4. 2-Jan

20. If the light is incident on a transparent material at the polarizing angle of 60 degree, The angle of refraction is

1. 60 degree
2. 30 degree
3. 90 degree
4. 45 degree

21. If the light is made incident on any transparent medium at the polarizing angle, the reflected light is

1. Plane polarised
2. partially Polarised
3. none of these
4. unpolarised

22. If the light is made incident on any transparent medium at the polarizing angle, the transmitted light is

1. Plane polarised
2. partially Polarised
3. none of these
4. unpolarised

23. In a semiconductor laser, the doping concentration is so high that the Fermi level in N type diode lies

1. Top of valence band
2. Bottom of conduction band
3. Inside the conduction band
4. Center of energy gap

24. In double refraction, the vibrations of E ray are confined in

1. Principle section
2. at an angle ? to the principle section
3. keeps on changing orientation
4. Plane perpendicular to the principle section

25. In optics, when the vibrations of light are limited to a single two dimensional plane, it is said that light has been what?

1. Plane polarised
2. Partially polarised
3. Unpolarised
4. Polarised

26. In the population inversion

1. The number of electrons in lower energy state is more than higher energy state
2. The number of electrons in lower energy state and higher energy state are same
3. None of them
4. The number of electrons in higher energy state is more than ground state

27. Laser beam is made a of

1. Highly coherent photon
2. Elastic particles
3. Excited atoms
4. Electrons

28. LASER is a short form of

1. Light Amplification by Stimulated Emission of Radiation.
2. Light Absorption by Stimulated Emission of Radiation.
3. Light Absorption by Spontaneous Emission of Radiation.
4. Light Amplification by Spontaneous Emission of Radiation.

29. Laser radiation is

1. Directed in a narrow beam
2. Produced with large power densities
3. All of the above
4. Monochromatic

30. O and E waves travel with the same velocity...............in the crystal

1. Perpendicular to the surface
2. along optic axis
3. none of the above
4. parallel to the surface