Physics · Atomic Physics
JEE Main 2025 — 29 January, Morning Shift — Question 32
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A): Emission of electrons in photoelectric effect can be suppressed by applying a sufficiently negative electron potential to the photoemissive substance.
Reason (R): A negative electric potential, which stops the emission of electrons from the surface of a photoemissive substance, varies linearly with frequency of incident radiation.
In the light of the above statements, choose the correct answer from the options given below
- Option A:
(A) is false but (R) is true.
- Option B:
(A) is true but (R) is false.
- Option C:
Both (A) and (R) are true and (R) is the correct explanation of .
- Option D:Correct
Both (A) and (R) are true but ( ) is not the correct explanation of (A).
Answer: D
Step-by-step solution
True (B) : True but not correct explanation
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2025
- Subject
- Physics
- Chapter
- Atomic Physics
- Topic
- Photoelectric Effect