An electron of mass m and a photon have same energy E. The ratio of de-Broglie

An Electron Of Mass M And A Photon Have Same Physics Question

An electron of mass m and a photon have same energy E. The ratio of de-Broglie wavelengths associated with them is

Options

(a) (E/2m)¹∕₂
(b) c(2mE)¹∕₂
(c) 1/c (2m/E)¹∕₂
(d) 1/c (E/2m)¹∕₂

Correct Answer:

1/c (E/2m)¹∕₂

Explanation:

λₑ = h / √2mE,

λp = hc / E,

E = hc / λp

λₑ / λp = (h / √2mE) (E / hc)

= 1/c √(E / 2m)

=1/c (E/2m)¹∕₂

Related Questions:

  1. The escape velocity from the earth’s surface is 11 kms⁻¹.A certain planet
  2. In a series resonant LCR circuit, the voltage across R is 100 volts and R =1kΩ
  3. The temperature of ideal gas is reduced from 927° C to 27° C. The r.m.s velocity
  4. Three particles A,B and C are thrown from the top of a tower with the same speed.
  5. The ratio of specific heats Cp/Cv=γ in terms of degrees of freedom (n) is given by

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Your email address will not be published.


*