Download the app

Questions  

Electrons of mass  m  with de-Broglie wavelength λ fall on the target in an X -ray tube. The cutoff wavelength λ0 of the emitted  X -ray is

a
λ0=2mcλ2h
b
λ0=2hmc
c
λ0=2m2c2λ3h2
d
λ0=λ

detailed solution

Correct option is A

Kinetic energy of electrons K=p22m=(h/λ)22m=h22mλ2So, maximum energy of photon =Khcλ0=h22mλ2  ∴λ0=2mcλ2h

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?


Similar Questions

The energy of a photon of characteristic x-ray from a Coolidge tube comes from


phone icon
whats app icon