Qstnid -Ii-13-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 I<sub>0</sub>. The Heating Current Is Increased To Increase The Temperature Of The Filament. The Intensity Of The X-ray Transmitted By The Foil Will Be - 44: X-rays - Neet-xii-physics

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NEET-XII-Physics

44: X-rays

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Qstn# ii-13 Prvs-Qstn Next-Qstn

#13
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
digAnsr: d
Ans : (d) > 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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