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Physics
A beam of unpolarised light is incident along the axis of a nicol prism then
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Q. A beam of unpolarised light is incident along the axis of a nicol prism then
KCET
KCET 2022
A
ordinary ray has greater refractive index
B
extra-ordinary ray has greater refractive index
C
both ordinary ray and extra-ordinary ray has same refractive index
D
some times ordinary ,some times extra-ordinary ray have greater refractive index
Solution:
Along the optic axis both o-ray and E-ray travel with same velocity. $RI$ of crystal, $n = c / v$ When $V$ is same for both the rays, $n ( RI )$ of the crystal is also same for both the rays.