Given below are two statements. One is labelled as Assertion (A) and the other is labelled as reason (R).
Assertion(A) : If the voltage of x-ray tube is doubled, the intensity of x-rays will remain unchanged.
Reason(R) : The intensity of the emitted x-rays beam is increased by increasing the filament current

In the light of the given statements, choose the correct answer from the options given.

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Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are false.

(A) is true but (R) is false.

Both (A) and (R) are true but (R) is not the correct explanation of (A).

answer is B.

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Detailed Solution

Increasing the voltage of X-ray tube increasing the speed of electrons incident on the heavy metal target. This increases the energy of emitted X-rays. $e V = \frac{1}{2} m v^{2} = h γ$ .

The intensity of the emitted X-rays beam is increased by increasing the number of electrons emitted from the cathode. This is done by increasing the filament current.

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