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NEET 2024 · Photons: Energy, Momentum & Radiation Pressure

Photons: Energy, Momentum & Radiation Pressure question from NEET 2024

Q11NEET 2024Easy

Photons: Energy, Momentum & Radiation Pressure

If cc is the velocity of light in free space, the correct statements about photon among the following are:

A. The energy of a photon is E=hνE = h\nu.

B. The velocity of a photon is cc.

C. The momentum of a photon, p=hνcp = \frac{h\nu}{c}.

D. In a photon-electron collision, both total energy and total momentum are conserved. E. Photon possesses positive charge.

Choose the correct answer from the options given below:

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Answer: (b)

  1. A: E=hνE = h\nu, true. B: a photon travels at cc in free space, true.
  2. C: p=Ec=hνcp = \frac{E}{c} = \frac{h\nu}{c}, true. D: energy and momentum are conserved in photon-electron collisions (Compton effect), true.
  3. E: a photon is uncharged, false.
  4. So the answer is (b) A, B, C and D only.
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