Start free

Physics · Atomic Physics

JEE Main 2025 — 4 April, Morning Shift — Question 50

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

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

  1. Option A:

    Both A\mathbf{A} and R\mathbf{R} are true but R\mathbf{R} is NOT the correct explanation of A\mathbf{A}

  2. Option B:

    A is true but R\mathbf{R} is false

  3. Option C:

    Both A\mathbf{A} and R\mathbf{R} are true and R\mathbf{R} is the correct explanation of A\mathbf{A}

  4. Option D:

    A\mathbf{A} is false but R\mathbf{R} is true

    Correct

Answer: D

Step-by-step solution

Intensity ∝\propto number of photons. Stopping potential depends on frequency.

Answer key and solution verified before publishing.

Practise Atomic Physics

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free
Exam
JEE Main 2025
Paper
4 April, Morning Shift
Subject
Physics
Chapter
Atomic Physics
Topic
Photoelectric Effect

More Atomic Physics questions from this paper

Given below are two statements: one is labelled as Assertion A and… | JEE Main 2025 PYQ with Solution · DhiX AI