If the momentum of electron is changed by P, then the de-Broglie wavelength

If The Momentum Of Electron Is Changed By P Then Physics Question

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:

  1. A wire of length 1 m is placed in a uniform magnetic field of 1.5 tesla at an angle
  2. If the dimensions of a physical quantity are givenby Mᵃ Lᵇ Tᶜ, then the physical
  3. Identify the pair whose dimensions are equal
  4. In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V
  5. To draw the maximum current from a combination of cells, how should be the cells

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*