JEE Mains · Physics · STD 12 - 11. Dual nature of radiation and matter
In photo electric effect \(A.\) The photocurrent is proportional to the intensity of the incident radiation. \(B.\) Maximum Kinetic energy with which photoelectrons are emitted depends on the intensity of incident light. \(C.\) Max. \(K.E\) with which photoelectrons are emitted depends on the frequency of incident light. \(D.\) The emission of photoelectrons require a minimum threshold intensity of incident radiation. \(E.\) Max. K.E of the photoelectrons is independent of the frequency of the incident light. Choose the correct answer from the options given below:
- A \(A\) and \(C\) only
- B \(A\) and \(E\) only
- C \(B\) and \(C\) only
- D \(A\) and \(B\) only
Answer & Solution
Correct Answer
(A) \(A\) and \(C\) only
Step-by-step Solution
Detailed explanation
Intensity of light \(\propto\) number of photons \(\propto\) no of photo electrons \(\propto\) photo current So, \(A\) is correct \(KE _{\max }= h v-\phi\) \(KE _{\max }\) depends on frequency So, \(C\) is correct So, \(A\) and \(C\) are correct
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