Photoelectric Experiment: Intensity, Stopping Potential & Graphs
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason
Assertion A: In photoelectric effect, on increasing the intensity of incident light the stopping potential increases.
Reason R: Increase in intensity of light increases the rate of photoelectrons emitted, provided the frequency of incident light is greater than threshold frequency.
In the light of the above statements, choose the correct answer from the options given below
Show answer and solution
Answer: (b)
- A: , so stopping potential does not depend on intensity. A is false.
- R: more intensity means more photons per second, so more electrons per second (for ). R is true.
- So the answer is (b) A is false but R is true.