Department of Pre-University Education, Karnataka course PUC Karnataka Science Class 12
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# X-ray from a Coolidge Tube is Incident on a Thin Aluminium Foil. the Intensity of the X-ray Transmitted by the Foil is Found to Be I0. the Heating Current is Increased to Increase - Physics

ConceptElectromagnetic Spectrum

#### Question

X-ray from a Coolidge tube is incident on a thin aluminium foil. The intensity of the X-ray transmitted by the foil is found to be I0. The heating current is increased to increase the temperature of the filament. The intensity of the X-ray transmitted by the foil will be
(a) zero
(b) < I0
(c) I0
(d) > I0

• zero

• < I0

• I0

• > I0

#### Solution

> I0.
We know that the intensity of an X-ray is directly proportional to the current through the X-ray tube. If the filament current is increased to increase the temperature of the filament, more electrons will be emitted from the filament per unit time. As a result, current in the X-ray tube will increase and consequently, the intensity of the X-ray will also increase.

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Solution X-ray from a Coolidge Tube is Incident on a Thin Aluminium Foil. the Intensity of the X-ray Transmitted by the Foil is Found to Be I0. the Heating Current is Increased to Increase Concept: Electromagnetic Spectrum.
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