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Question: Answered & Verified by Expert
If the de-Broglie wavelength of a proton is 10-13 m, the electric potential through which it must have been accelerated is 
PhysicsDual Nature of MatterNEET
Options:
  • A 4 . 0 7 × 1 0 4 V
  • B 8 . 2 × 1 0 4 V
  • C 8 . 2 × 1 0 3 V
  • D 4 . 0 7 × 1 0 5 V
Solution:
2954 Upvotes Verified Answer
The correct answer is: 8 . 2 × 1 0 4 V
λ = h⁡ 2 mq V⁡

1 0 - 1 3 2 = 6 . 6 × 1 0 - 3 4 2 2 × 1 . 6 7 × 1 0 2 7 × 1 . 6 × 1 0 - 1 9 V⁡

V⁡ = 8 . 2 × 1 0 4 volt

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