The frame of reference could be
Correct answer: B. not fixed always
- A. fixed always
- B. not fixed always
- C. at rest
- D. none of these
Explanation
Option B is correct since there can be two frames of reference and they are not fixed Option A is incorrect since the frames of reference can change depending upon the position of the observer Option C is incorrect since the inertial frame of reference is moving at a constant velocity and the non-inertial frame of reference is accelerating Option D is incorrect since it states none of these which is not the case
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About Dawn of Modern Physics
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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