Question

Assertion (A): Electrons are ejected from the surface of zinc when it is irradiated by yellow light.

Reason (R): Energy associated with a photon of yellow light is more than the work function of zinc.

Options

• If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• If both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).

• If Assertion (A) is true and Reason (R) is false.

• If both Assertion (A) and Reason (R) are false.

Answer 1

If both Assertion (A) and Reason (R) are false.

Explanation:

Assertion (A) is False because yellow light (2.14 eV) has less energy than the work function of zinc (4.3 eV), so no electrons are ejected. 

Reason (R) is False because yellow light energy is not more than the work function of zinc.