Statement I If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X -rays do not change. Statement II When an electron beam strikes the target in an X-ray

Question

Statement I If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X -rays do not change. Statement II When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.

TestHub · Accepted Answer

Cut-off wavelength depends on the accelerating voltage, not the characteristic X -rays. Further approximately 2% kinetic energy of the electrons is utilised in producing X-rays. Rest 98% is lost in heat. ∴ Option (b) is correct.

Physics - Modern Physics Question with Solution | TestHub

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