VS=ehv−ϕ
so stopping potential doesn't depend on Intensity
I= Aηhv
On increasing intensity no. of photons per sec. n increases so the no. of electrons.
JEE Main 2025 — Physics Modern Physics
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
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
Held on 4 Apr 2025 · Verified 6 Jul 2026.
Both A and R are true but R is NOT the correct explanation of A
A is false but R is true
A is true but R is false
Both A and R are true and R is the correct explanation of A
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