Assertion :The strength of photoelectric current depends upon the intensity of incident radiation. Reason: A photon of energy E possesses a mass equal to $E / c^{2}$ and momentum equal to E/c.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The photoelectric current is directly proportional to the intensity of incident light
A moving photon has the mass that is given by $m = \frac{E}{C^{2}}$
And its momentum , $P_{p h o t o n}$ is equal to its energy divided by speed of light
$P_{p h o t o n} = \frac{E}{C}$

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Assertion :The strength of photoelectric current depends upon the intensity of incident radiation. Reason: A photon of energy E possesses a mass equal to E/c2 and momentum equal to E/c.

Assertion :The strength of photoelectric current depends upon the intensity of incident radiation. Reason: A photon of energy E possesses a mass equal to $E / c^{2}$ and momentum equal to E/c.