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Assertion : Though light of a single fre...

Assertion : Though light of a single frequency (monochromatic) is incident on a metal , the energies of emitted photoelectrons are different.
Reason : The energy of electrons emitted from inside the metal surface is lost in collision with the other atoms in the metal.

A

If both assertion and reason are true and reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not correct explanation of the assertion.

C

If assertion is true but the reason is false.

D

If both the assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
When a light of single frequency falls on the electron of inner layer of metal , then this electron comes out of the metal surface after a large number of collisions with atoms of its upper layer.
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In each of the following questions, a statement is given and a corresponding statement or reason is given just below it. In the statement, mark the correct answer as Statement-I: Though light of a single frequency (monochromic light) is incident ona metal, the energies of emitted photoelectrons are different Statement-II: The energy of electrons just after they absorb photons incident on the metal surface may be lost in collision with other atoms in the metal before the electron is ejected out of the metal.

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