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JEE Main202131 Aug 2021Morning ShiftPhysicsDual Nature of MatterActual

A moving proton and electron have the same de-Broglie wavelength. If K and P denote the K . E . and momentum respectively. Then choose the correct option :

Options

  1. AK p > K e and P p = P e
  2. BK p < K e and P p = P e
  3. CK p < K e and P p < P e
  4. DK p = K e and P p = P e

Correct answer

B. K p < K e and P p = P e

Step-by-step solution

λ d e b   = h p = h 2 m K E If λ is same the P will be same K E ∝ 1 / m m p > m e ⇒ K p < K e

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