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Electron, Photon, Photo-electric Effect and X-Rays — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectron, Photon, Photo-electric Effect and X-Rays1 Mark
MCQ
Which of one is correct
  • ✓
    $E^2=p^2 c^2$
  • B
    $E^2=p^2 c$
  • C
    $E^2=p c^2$
  • D
    $E^2=p^2 / c^2$
✓

Answer

Correct option: A.
$E^2=p^2 c^2$
Momentum $p=\frac{E}{c} \Rightarrow E^2=p^2 c^2$

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