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Assertion : Kinetic energy of photo elec...

Assertion : Kinetic energy of photo electrons emitted by a photosensitive surface depends upon the intensity of incident photon.
Reason : The ejection of electrons from metallic surface is possible with frequency of incident photon below the threshold frequency.

A

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

B

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

C

If assertion is true but reason both are false.

D

If assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
4
According Einstein equation
`KE = hV - hv_(0),i.e. KE` depends upon the frequency. Photoelectron emitted only if incident frequency more than threhold frequency.
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