JEE Mains · Physics · STD 12 - Dual nature of radiation and matter
- JEE Mains 2023
- Medium
- MCQ
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:
Pick an option to check your answer.
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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