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A : Work function of aluminium is 4.2 eV...

A : Work function of aluminium is 4.2 eV . Emission of electrons will be possible by two photons , each of 2.5 eV energy , striking the electron of aluminium .
R : Energy of a photon can be less then the work function of the metal , for photoelectron emission .

A

If both Assertion & Reason are ture and the reason is the correct explanation of the assertion , then mark (1) .

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion , then mark (2) .

C

If Assertion is true statement but Reason is false , then mark (3)

D

If both Assertion and Reason are false statements , then mark (4) .

Text Solution

Verified by Experts

The correct Answer is:
D
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