An electron beam of energy `10 KeV` is incident on metallic foil. If the interatomic distance is `0.55Å`. Find the angle of diffraction.

The wavelenght of an electron of energy 10 keV will be

The wavelength of an electron of energy 10 keV will be :

The wavelength of an electron of energy 10keV will be

An electron beam of energy 10keV is passed through a slit of width 1 mm. The observed phenomenon will be:

In vacuum an electron of energy 10 keV hits tungsten target, then emitted radiation will be

An X-ray beam of wavelength 1.0Å is incident on a crystal of lattice spacing 2.8 Å . Calculate the value of Bragg angle for first order of diffraction.