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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: - In photoelectric effect, the photoelectric current
- During negative β-decay
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
- A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In photoelectric effect, the photoelectric current
- During negative β-decay
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
- A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
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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