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An electric bulb is hanging over a table...

An electric bulb is hanging over a table at a height of 1 m above it. The illuminance on the table directly below the bulb is 40 lux. The illuminance at a point on the table 1 m away from the first point will be about

A

10 lux

B

14 lux

C

20 lux

D

28 lux

Text Solution

Verified by Experts

The correct Answer is:
B
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