Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion In photoelectron emission the velocity of electron ejected from near the surface is larger than that coming from interior of metal. Reason The velocity of ejected electron will be zero.A) If the Assertion and Reason are true and Reason is the correct explanation of Assertion
B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C) If Assertion is true but Reason is false
D) If both Assertion and Reason are false
Correct Answer: C
Solution :
The velocity of photoelectron ejected from near the surface is larger than that coming from interior of metal because for given energy of the incident photon less energy is spent in ejecting the electron near the surface than that from the interior of the surface.
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