Which of the following statements are correct for an X-ray tube?

Options

A. On increasing potential difference between the filament and target, photon flux of X-rays increase.
B. On increasing potential difference between the filament and target, frequency of X-rays increases.
C. On increasing filament current, cut-off wavelength increases.
D. On increasing filament current, intensity of X-ray increases.

Answer

B, D

Explanation

When potential difference between filament and target is increased then `KE` of strike electrons gets increased.Since must energies electrons now stricke the target, therefore more energies electrons are emitted.It means , frequency of X-ray photon increases. It means , ponetration power of X-ray gets increased.
To increase the photon plux, rate of collision of electron with the target must be increased. This can be achieved only when rate of emission of electrons from the filement is increased. To achieve this , filementcurrent must be increased. Therefore , options (b) and (d) are currect.