The relativistic changes in mass, length and time in daily life are not observed because:
Correct answer: C. The speed of the objects are very small as compared to speed of light
- A. The mass of the objects are very large
- B. The size of the objects are very small
- C. The speed of the objects are very small as compared to speed of light
- D. None of the above
Explanation
The relativistic effects become noticeable only at speeds approaching the speed of light, which is much higher than typical speeds in everyday life. At everyday speeds, classical mechanics provides accurate predictions, and relativistic corrections are negligible.
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Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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