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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?

Shane Macguire , 11 Years ago
Grade upto college level
anser 1 Answers
Jitender Pal
Sol. The illuminance will not change
Last Activity: 11 Years ago
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