This question has Statement-1 and Statement-2. Of the four choices given after the statements,

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This question has Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements :
Statement-1 : A metallic surface is irradiated by a monochromatic light of frequency υ > υ0 (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.
(b) Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation of Statement-1.
(c) Statement-1 is true, Statement-2 is true, Statement-2 is not the correct explanation of Statement-1.
(d) Statement-1 is false, Statement-2 is true.


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Salim Ahmed Kawsar

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(d) : The maximum kinetic energy of the electron
Kmax = hυ – hυ0
Here, υ0 is threshold frequency.
The stopping potential is
eV0 = Kmax = hυ – hυ0
Therefore, if υ is doubled Kmax and V0 is not doubled.

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