. If the accelerating potential in an X–ray tube is increased, the wavelengths


STATEMENT – 1

If the accelerating potential in an X–ray tube is increased, the wavelengths of the characteristic X–ray do not change.

because

STATEMENT – 2

When an electron beam strikes the target in an X–ray tube, part of the kinetic energy is converted into X–ray energy.

(A)  Statement – 1 is True, Statement – 2 is True; Statement – 2 is a correct explanation for Statement – 1.

(B)  Statement – 1 is True, Statement – 2 is True; Statement – 2 is NOT a correct explanation for Statement – 1.

(C)  Statement – 1 is True, Statement – 2 is False.

(D)       Statement – 1 is False, Statement – 2 is True.

Best Answer

Wavelength of characteristics x-ray depends only on the atomic number of the target element, whereas wavelength of the continuous X-ray depends on that fraction of energy of the incident electron, that gets converted into x-ray photon. These two are independent from each other.

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