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The Potential Difference Applied to an X-ray Tube is Increased. as a Result, in the Emitted Radiation, - Physics

Short Note

The potential difference applied to an X-ray tube is increased. As a result, in the emitted radiation,
(a) the intensity increases
(b) the minimum wavelength increases
(c) the intensity remains unchanged
(d) the minimum wavelength decreases.

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Solution

(c) the intensity remains unchanged
(d) the minimum wavelength decreases

Cutoff wavelength (`λ_min`) is given by 

`λ_min = (hc)/(eV)`

Here,
h = Planck's constant
c = Speed of light
V = Accelerating voltage
e = Charge of electron

If the potential difference applied to an X-ray tube  (V) is increased, then the minimum wavelength (cutoff wavelength) gets decreased.
Intensity is not affected by the potential difference applied.

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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 22 X-rays
MCQ | Q 5 | Page 394
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