Question

Cutoff wavelength of X-rays coming from a Coolidge tube depends on the
(a) target material
(b) accelerating voltage
(c) separation between the target and the filament
(d) temperature of the filament.

Answer 1

Explanation:

Cutoff wavelength of X-rays coming from a Coolidge tube depends on the

(a) target material

(b) accelerating voltage

(c) separation between the target and the filament

(d) temperature of the filament.

Answer 2

X-rays cutoff wavelength depends on the (b) accelerating voltage.

Explanation:

Cutoff wavelength λmin as shown as  

$2 \mathrm{min}=\mathrm{hceV}$

where,

c = Light of speed  

h = Constant of Planck

V = Voltage that is accelerating

e = Electron’s charge

It is clear that a cutoff wavelength is dependent on the voltage that is accelerating. It is not reliant on on the target substantial, departure between the temperature and the filament.