Explanation
Photoelectric effect can be explained on the basis of spectrum of an atom.
X-rays are electromagnetic waves of wavelength ranging from 0.1 to 100 Å.
Refer to the application of x-rays.
In X-ray tube, target must be heavy element with high melting point.
Continuous spectrum of X-rays consists of radiations of all possible wavelength range having a definite short wavelength limit.
In general X-rays have larger wavelength than that of gamma rays.
Nucleus of heavy atom captures electron of K-orbit. This is a radioactive process, so vacancy of this electron if filled by an outer electron and X-rays arc produce.
Because they are electromagnetic waves.
X-rays have high energy. They penetrate into the solid crystal and arc used to find out the internal structure.
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