JEE Mains · Physics · STD 12 - Dual nature of radiation and matter
- JEE Mains 2023
- Medium
- MCQ
Given below are two statements : Statement \(I :\) Stopping potential in photoelectric effect does not depend on the power of the light source. Statement \(II :\) For a given metal, the maximum kinetic energy of the photoelectron depends on the wavelength of the incident light. In the light of above statements, choose the most appropriate answer from the options given below. Options :
Pick an option to check your answer.
Answer & Solution
Correct Answer
(D) Both statement \(I\) and statement \(II\) are correct
Step-by-step Solution
Detailed explanation
Stopping potential \(V _{ S }=\frac{ KE _{\max }}{ e }\)
\(V _{ S }=\frac{\frac{ hC }{ \lambda }-\phi}{ e }\)
Stopping potential does not depend on intensity or power of light used, it only depends on frequency or wavelength of incident light.
So both statements \(I\) and \(II\) are correct
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