Given below are two statements : one is labelled as Assertion A and

1.	Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The photoelectric effect does not take place, if the energy of the incident radiation is less than the work function of a metal. Reason R : Kinetic energy of the photoelectrons is zero, if the energy of the incident radiation is equal to the work function of a metalIn the light of the above statements, choose the most appropriate answer from the options given below.(A) Both A and R are correct and R is the correct explanation of A(B) Both A and R are correct but R is not the correct explanation of A(C) A is correct but R is not correct(D) A is not correct but R is correct
Answer» (B) Both A and R are correct but R is not the correct explanation of A To free the electron from metal surface minimum energy required, is equal to the work function of that metal. So Assertion A, is correct. hv = w₀ + K. E._max if hv = w₀ ⇒ K.E._max = 0 Hence reason R, is correct, But R is not the correct explanation of A.

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The photoelectric effect does not take place, if the energy of the incident radiation is less than the work function of a metal. Reason R : Kinetic energy of the photoelectrons is zero, if the energy of the incident radiation is equal to the work function of a metalIn the light of the above statements, choose the most appropriate answer from the options given below.(A) Both A and R are correct and R is the correct explanation of A(B) Both A and R are correct but R is not the correct explanation of A(C) A is correct but R is not correct(D) A is not correct but R is correct

Answer»

(B) Both A and R are correct but R is not the correct explanation of A

To free the electron from metal surface minimum energy required, is equal to the work function of that metal.

So Assertion A, is correct.

hv = w₀ + K. E._max

if hv = w₀

⇒ K.E._max = 0

Hence reason R, is correct, But R is not the correct explanation of A.