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Physics
Polaroid glass is used in sun glasses because
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Q. Polaroid glass is used in sun glasses because
AIIMS
AIIMS 2013
Wave Optics
A
it reduces the light intensity to half on account of polarisation
69%
B
it is fashionable
13%
C
it has good colour
15%
D
it is cheaper
4%
Solution:
When unpolarised light passes through one polariser, the electric field component of the radiation is restricted to one direction in one plane. So, the intensity is reduced to half. Thus, polaroid glass is used in sun glasses.