A photo cell is receiving light from a s...

A photo cell is receiving light from a source placed at a distance of `1 m`. If the same source is to be placed at a distance of `2 m` , then the ejected electron

Moves with one-fourth energy as that of the initial energy

Moves with one-fourth of momentum as that of the initial momentum

Will be half in number

Will be one-fourth in number

Text Solution

Verified by Experts

The correct Answer is:

No. of ejected electron `prop` intensity `prop 1/(("distance")^2)`
i.e. `(1/4)^(th)` in number.

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