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Light from a point source falls on a sma...

Light from a point source falls on a small area placed perpendicular to the incident light. If the area is rotated about the incident light by an angle of `60^(@)` , by what fraction will the illuminance change

A

It will be doubled

B

It will be halved

C

It will not change

D

It will become one-fourth

Text Solution

Verified by Experts

The correct Answer is:
c
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