Ask a Question

if the kinetic energy of an electron is increased four times, the wavelength of the de-Broglie wave associated

0 votes
138 views
in random by (98.9k points)
edited

If the kinetic energy of an electron is increased four times, the wavelength of the de-Broglie wave associated with it would become

(1) Two times

(2) Half

(3) One fourth

(4) Four times

1 Answer

0 votes
by (98.9k points)
selected by
 
Best answer
(2) Half

Answer:

The wavelength λ is inversely proportional to the square root of kinetic energy. So if KE is increased 4 times, the wavelength becomes half.

λ∝1/√KE

Related questions

0 votes
1 answer 103 views
Calculate the wavelength (in nanometer) associated with a proton moving at 1.0×103ms-1
asked Jul 22, 2022 in random by Doubtly (98.9k points)

Doubtly is an online community for engineering students, offering:

  • Free viva questions PDFs
  • Previous year question papers (PYQs)
  • Academic doubt solutions
  • Expert-guided solutions

Get the pro version for free by logging in!

Most popular tags

jeemain geography-10th engineering physics semester 5 web computing

5.7k questions

5.1k answers

108 comments

557 users

Doubtly
...