What is the nature of soft X-rays and hard X-rays ?

What is the charge of X-rays?

(a) What is meant by soft and hard X-rays ? How can the intensity and penetrating powers of X-rays be controlled ? (b) Derive an expression for total energy of an electron in nth orbit of hydrogen atom.

What is the wavelength range of X-rays ?

Statement I : Penetration power of hard X-ray is more than that of soft X-ray. Statement II : Hard X-ray is used for engineering purpose while soft X-ray is used for medical purpose.

The nature of X-rays spectrum is

The nature of X-rays spectrum is

Compare X-rays and gamma -rays .