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Electromagnetic Waves - Questions and Answers

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46. The light emerging from a Nicol prism
A. has vibration in all directions
B. has vibration in one direction only
C. has no vibration at all
D. has vibrations in two mutually perpendicular directions
Explanation:
47. Which one of the following may be used both as a polarizer and a analyzer
A. Nicol prism
B. liquid prism
C. rock crystal
D. crystal of diamond
Explanation:
48. If the refraction index of a medium like glass is µ, the polarizing angle ip is given by
A. ip = sin-1 (µ)
B. ip = cos-1 (µ)
C. ip = tan-1 (µ)
D. ip = tan µ
Explanation:
49. The property that distinguishes the transverse waves from the longitudinal waves is
A. reflection
B. dispersion
C. polarization
D. interference
Explanation:
50. Polarization of light by reflection on the surface of glass was discovered by
A. Bartholinus
B. Malus
C. Brewster
D. Fresnel
Explanation:
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