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A beam of ordinary unpolarised light passes through a tourmaline crystal  and then it passes through another tourmaline crystal , which is oriented such that its principal plane is parallel to that of . The intensity if emergent light is. Now  is rotated by  about the ray. The emergent ray will have an intensity

a)

b)

c)

d)



Question ID - 150216 | SaraNextGen Top Answer

A beam of ordinary unpolarised light passes through a tourmaline crystal  and then it passes through another tourmaline crystal , which is oriented such that its principal plane is parallel to that of . The intensity if emergent light is. Now  is rotated by  about the ray. The emergent ray will have an intensity

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

Intensity of light from

On rotating through ,

           (law of Malus)

127 votes


127