The dimensions of Plank’s Constant equals to that of

This question was previously asked in
AMRU HP BSc Nursing Admission Test 7 July 2024 Official Paper
View all UP CNET Papers >
  1. Energy
  2. Momentum
  3. Angular momentum
  4. Power

Answer (Detailed Solution Below)

Option 3 : Angular momentum
Free
AIIMS BSc Nursing: Preparation Booster Live Test
5.6 K Users
50 Questions 50 Marks 60 Mins

Detailed Solution

Download Solution PDF

Explanation:

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.

Latest UP CNET Updates

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.

Get Free Access Now
Hot Links: teen patti master list teen patti bindaas teen patti master purana teen patti master update