Question : Polaroid glass is used in sun glasses because
A. it reduces the light intensity to half on account of polarisation
B. it is fashionable
C. it has good colour
D. it is cheaper.
Answer:A
Question : Polaroid glass is used in sun glasses because
A. it reduces the light intensity to half on account of polarisation B. it is fashionable C. it has good colour D. it is cheaper.