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Question

Assertion :If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X-rays do not decrease. Reason: When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The wavelength of characteristic X-ray wavelength depends on the atomic number of the target element, and is independent of the accelerating potential in X-ray tube.
Although it is not the reason, still it is true that when an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.

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