If the source of light is moving toward the observer, then the speed of light received by the observer will be:
Correct answer: C. Remain same
- A. Decreased
- B. Increased
- C. Remain same
- D. Maximum
Explanation
The speed of light received by the observer will remain the same, regardless of the motion of the light source. This is because the speed of light is a universal constant, and it is the same for all observers, regardless of their relative motion or of the motion of the light source.
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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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