Planck's constant has the dimension of:
Correct answer: D. Angular momentum
- A. Energy
- B. Work
- C. Linear momentum
- D. Angular momentum
Explanation
The dimension of angular momentum is M1L2T-1. This option is correct oneAngular momentum has the formula as π π L = nh / 2 π ,where is the Planck's constant. π π nh / 2 π is a constant and can be neglected during dimension calculation. Hence, Angular momentum has the same dimension as of Planck's constant
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About Quantum Theory and Radiation
Quantum theory treats electromagnetic radiation as packets of energy called photons, with energy proportional to frequency through E equals hf. The topic covers Planck's hypothesis, photon momentum, the photoelectric effect, threshold frequency, work function and wave particle duality, distinguishing quantised energy exchange from classical continuous radiation.
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