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Anshu Qabool Patla
Asked: 2022-11-01T08:14:20+05:30 In:

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

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
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1 Answer

  1. Correct Answer – c

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