Dual Nature Of Light Question 6
Assertion : Kinetic energy of photo electrons emitted by a photosensitive surface depends upon the frequency of incident photon. Reason : The ejection of electrons from metallic surface is possible with frequency of incident photon above the threshold frequency. [AIIMS 1999]
Options:
A) If both assertion and reason are true 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 is false.
D) If the assertion and reason are both false.
Show Answer
Answer:
Correct Answer: D
Solution:
According to Einstein’s equation $ KE=h\nu -h{\nu_{0}}; $ i.e., KE depends upon the frequency. Photoelectron is emitted only if incident frequency is more than threshold frequency.
BETA
