Question

# Direction : The question has Statement 1 and Statement 2. Of the four choices given after the statements, choose the one that describes the two statements.Statement 1 : A metallic surface is irradiated by a monochromatic light of frequency v>v0 (the threshold frequency). The maximum kinetic energy and the stopping potential are Kmax and V0 respectively. If the frequency incident on the surface is doubled, both the Kmax and V0 are also doubled.Statement 2 : The maximum kinetic energy and the stopping potential of photoelectrons emitted from a surface are linearly dependent on the frequency of incident light.

A
Statement 1 is True, Statement 2 is False.
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B
Statement 1 is True, Statement 2 is True; Statement 2 is a correct explanation for Statement 1.
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C
Statement 1 is True, Statement 2 is True; Statement 2 is not the correct explanation for Statement 1.
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D
Statement 1 is False, Statement 2 is True.
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Solution

## The correct option is C Statement 1 is False, Statement 2 is True.KEmax=hμ−hμ0e×Δv=hμ−hμ0V0=hμe−hμ0e′μ′ is doubledKEmax=2hμ−hμ0V′0=(ΔV)′=2hμe−hμ0eV′0V0 may not be equal to 2V=hμe−hμ0eSo, the answer is option (D).

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