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Q.

Intensity of light incident on a photo sensitive surface is doubled. Then

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a

the momentum of emitted electrons is doubled

b

the number of emitted electrons is doubled

c

the number of emitted electrons is trebled

d

the K.E. of emitted electrons is doubled

answer is B.

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Detailed Solution

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Intensity is proportional to the no of photons and photon no. is proportional to photoelectron emitted. So no of photoelectrons emitted will also be doubled.

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