The wavelength of $X$-rays is of the order of ...... $ \mathring A $.

An $X$-ray beam of wavelength $1 \ \mathring A$ is incident on a crystal with a lattice spacing of $2.8 \ \mathring A$. Find the value of the Bragg angle in degrees for the first-order diffraction.

The Compton effect is associated with

Penetrating power of $X-$rays depends on

$X$-rays are used for the structural analysis of crystals because:

When $X$-rays pass through a high-intensity uniform magnetic field,they: