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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: - If a magnetic substance is kept in a magnetic field, then which of the following
- The magnetic flux linked with a circuit of resistance 100Ω increases from 10 to 60 Wb.
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- If a charge in current of 0.01 A in one coil produces a change in magnetic flux
- The refractive index of water, glass and diamond are 1.33, 1.50, 2.40 respectively
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 magnetic substance is kept in a magnetic field, then which of the following
- The magnetic flux linked with a circuit of resistance 100Ω increases from 10 to 60 Wb.
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- If a charge in current of 0.01 A in one coil produces a change in magnetic flux
- The refractive index of water, glass and diamond are 1.33, 1.50, 2.40 respectively
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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