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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
- The cylindrical tube of a spray pump has radius R, one end of which has n fine holes,
- The lowest frequency of light that will cause the emission of photoelectrons
- A coil of resistance 10 Ω and an inductance 5 H is connected to a 100 volt
- The specific charge of a proton is 9.6×10⁷ C/kg. The specific charge of an alpha particle
- The moderator in a reactor
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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