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Q.

In a room containing smoke particles, the intensity due to a source of light will :

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a

obey the inverse square law

b

be constant at all distances

c

increase with distance from the source than the inverse fourth power law

d

fall faster with distance from the source than the inverse fourth power law

answer is D.

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Detailed Solution

The inverse square law and inverse fourth power law do not hold in smoked filled room. So, the intensity of source falls faster.
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