Practice Quiz

MTEL Physics Practice Exam

Category - Physics

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Which of the following is one of Einstein's postulates of special relativity?
  1. Events that are simultaneous for one observer are not simultaneous for another observer in motion relative to the first.
  2. The energy of a photon is directly proportional to the frequency of the light.
  3. The momentum of an object approaches infinity as its speed approaches that of light.
  4. The speed of light in a vacuum has the same value in all inertial reference frames.
Explanation
Correct Response: D. One of the two postulates of special relativity is that the speed of light in a vacuum has the same value in all inertial reference frames. Answer choices A and C are both included in special relativity as conclusions. Answer choice B is associated with the photoelectric effect. It was first proposed by Max Planck, and then used by Albert Einstein in developing his theory that explained the photoelectric effect.
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