Physics · Units, Dimensions & Error Analysis
JEE Main 2025 — 4 April, Evening Shift — Question 55
Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II :
Statement (I): The dimensions of Planck's constant and angular momentum are same.
Statement (II) : In Bohr's model electron revolve around the nucleus only in those orbits for which angular momentum is integral multiple of Planck's constant.
In the light of the above statements, choose the most appropriate answer from the options given below.
- Option A:
Both Statement I and Statement II are incorrect
- Option B:Correct
Both Statement I and Statement II are correct
- Option C:
Statement I is incorrect but Statement II is correct
- Option D:
Statement I is correct but Statement II is incorrect
Answer: B
Step-by-step solution
Statement I: True, since Planck’s constant and angular momentum both have dimensions .
Statement II: True, because in Bohr’s model the electron’s angular momentum is quantized as
Both Statement I and Statement II are correct.
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2025
- Subject
- Physics
- Chapter
- Units, Dimensions & Error Analysis
- Topic
- Units and Dimensions Analysis