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If the momentum of electron is changed by P, then the de-Broglie wavelength associated with it changes by 0.5%. The initial momentum of electron will be:
Options
(a) 200 P
(b) 400 P
(c) P / 200
(d) 100 P
Correct Answer:
200 P
Explanation:
The de-Broglie’s wavelength associated with the moving of electron λ = h/P
Now, according to the problem
dλ / λ= – dp / P
0.5 / 100 = P / P’
P’ = 200 P
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a small amount of antimony is added to germanium crystal
- A proton is projected with a speed of 3×10⁶ m/s horizontally from east to west.
- If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform
- A black body is at 727⁰C. It emits energy at a rate which is proportional to
- A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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