Positron and electron anhilate into:
Correct answer: C. Two y-ray photons
- A. Alpha-rays
- B. One y-ray photon
- C. Two y-ray photons
- D. X-rays
Explanation
In anhhilation of matter two gamma rays photon are produced.
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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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