The linear momentum of a 3 MeV photon is
Correct answer: A. 0.01eV sm-1
- A. 0.01eV sm-1
- B. 0.001eV s m-1
- C. 0.03eV s m-1
- D. 0.04eV s m-1
Explanation
Energy of photon, E=3MeV=3×10^6eVLinear momentum of the photon, p=E/cwhere c is the speed of light in vacuum p= 3×10^6 eV / 3×10^8 m/s=10^−2 eVs/m =0.01eVs/m
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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