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Q.

Statement I : In photoelectric effect, when the frequency of incident light is doubled, kinetic energy is more than doubledStatement II : Photo current increases when the intensity of incident light is increased and is independent of frequency

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a

Both Statement I and Statement II are true

b

Statement I is true and Statement II is false

c

Statement I is false and Statement II is true

d

Both Statement I and Statement II are false

answer is B.

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Detailed Solution

KE = hv - WW( work function ) is constant for given metal when frequency of incident radiation is doubled kinetic energy is more than doubledEx:- KE1 = hv - WKE2 = 2hv - WThus Statement I is trueStatement II Intensity of radiation ∝Photo current.Photo current is independent of frequency of radiation, Thus Statement II is true
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