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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
Related Questions: - Point masses m₁ and m₂ are placed at the opposite ends of a rigid rod of length L,
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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
- Point masses m₁ and m₂ are placed at the opposite ends of a rigid rod of length L,
- A gas is suddenly expanded such that its final volume becomes 3 times
- A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal
- A thermodynamic system undergoes cyclic process ABCDA as shown in figure
- Which one of the following bonds produces a solid that reflects light in the visible region
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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