Department of Pre-University Education, Karnataka course PUC Karnataka Science Class 12
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# The Potential Difference Applied to an X-ray Tube is Increased. as a Result, in the Emitted Radiation, - Physics

ConceptElectromagnetic Spectrum

#### Question

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.

#### 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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Solution The Potential Difference Applied to an X-ray Tube is Increased. as a Result, in the Emitted Radiation, Concept: Electromagnetic Spectrum.
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