Where does the energy lost by fast-moving electron goes:
Correct answer: A. Appears as photon
- A. Appears as photon
- B. Appears as electron -positron pair
- C. Appears as its K.E
- D. It vanishes
Explanation
When a fast-moving electron loses energy, it can emit photons. This process is known as bremsstrahlung radiation, where the electron interacts with the electromagnetic field of an atomic nucleus or another electron, causing it to emit a photon.
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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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