| ⇦ | 
| ⇨ |
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: - Three identical spherical shells, each of mass m and radius r are placed
- The wavelength of first line of Balmer series is 6563Å. The wavelength of first line
- Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x 10⁻² C
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- A charge of 100 μC has a potential at a distance of 9 m is
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Three identical spherical shells, each of mass m and radius r are placed
- The wavelength of first line of Balmer series is 6563Å. The wavelength of first line
- Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x 10⁻² C
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- A charge of 100 μC has a potential at a distance of 9 m is
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply