Question -
Answer -
An X-ray probe has agreater energy than an electron probe for the same wavelength.
Wavelength of light emitted from theprobe, λ = 1 Å = 10−10 m
Mass of an electron, me =9.11 × 10−31 kg
Planck’s constant, h = 6.6× 10−34 Js
Charge on an electron, e =1.6 × 10−19 C
The kinetic energy of theelectron is given as:
Where,
v = Velocity of the electron
mev = Momentum (p) of the electron
According to the deBroglie principle, the de Broglie wavelength is given as:
Energy of a photon, 
Hence,a photon has a greater energy than an electron for the same wavelength.