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Intensity vs Photocurrent

Each question...

Question

Each question contains statement 1 and statement 2. Choose the correct answer (only one option is correct) from the following options.

Statement -1 : In process of photoelectric emission, all emitted electrons do not have same kinetic energy.
Statement -2 : If radiation falling on photosensitive surface of a metal consist of different wavelength then energy acquired by electrons absorbing photons of different wavelength shall be different.

Statement-1 is false, Statement -2 is true

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Statement -1 is true, Statement-2 is true; Statement -2 is a correct explanation for statement-1

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Statement -1 is true, Statement-2 is true; Statement -2 is not correct explanation for statement-1

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Statement-1 is true, Statement -2 is false

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Solution

The correct option is D Statement -1 is true, Statement-2 is true; Statement -2 is not correct explanation for statement-1
Photoelectric Law,
$K E_{m a x} = h v - W_{o}$

The energy of the electron coming out predicted from the formula is the maximum Kinetic energy it can have, i.e it puts an upper limit to the KE of the $e^{-}$ .
The KE of the electrons can lie anywhere in
$K E ϵ (0, K E_{m a x})$

Both statement I and II are true, but even it radiation of single wavelength is incident on photosensitive surface, electrons of different KE will be emitted.

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