Question
Download Solution PDFThe dimensions of Plank’s Constant equals to that of
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Planck's constant (h) is a fundamental constant in quantum mechanics. The dimensions of Planck's constant can be derived from its role in the equation E = hν, where E is energy and ν is frequency.
The dimensions of energy (E) are [ML2T-2].
Frequency (ν) has dimensions of [T-1].
Therefore, Planck's constant (h) has dimensions of:
[h] = [E/ν] = [ML2T-2] / [T-1] = [ML2T-1]
Upon examining the given options:
1) Energy: [ML2T-2]
2) Momentum: [MLT-1]
3) Angular momentum: [ML2T-1]
4) Power: [ML2T-3]
It is clear that the dimensions of Planck's constant match those of angular momentum.
∴ The correct answer is option 3: Angular momentum.
Last updated on Jun 3, 2025
-> UP CNET Counselling 2025 Has been Started June 2, 2025. Candidates can Start registration for Round 1.
-> The UP CNET Exam 2025 was held on 21st May 2025.
-> The UP CNET 2025 Notification was released for the 2025-26 academic session.
-> 12th-pass Nursing aspirants can appear for this exam.
-> The exam has 120 MCQs for 120 marks to assess Nursing Aptitude, Physics, Chemistry, Biology, and English.