A photo cell is receiving light from a source placed at a d…

Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect MCQ (Single Correct)

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

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The correct answer is:

Number of ejected electrons Intensity
Therefore an increment of distance two times will reduce the number of ejected electrons to of the previous one.

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