Question 386: Dual Nature of Matter and Radiation

Question

Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?

Accepted Answer

The cut-off wavelength is given by $${\lambda _{\min }} = {{hc} \over {eV}}$$
The cut-off wavelength depends on the energy eV of the accelerated electrons and is independent of the atomic number of target. Thus, greater the accelerating voltage for electrons, higher will be kinetic energy it attains before striking the target, higher will be the frequency of X-rays and smaller will be wavelength.

Answer

Wavelength of characteristic X-rays decreases when the atomic number of the target increases.

Answer

Cut-off wavelength of the continuous X-rays depends on the atomic number of the target.

Answer

Intensity of the characteristic X-rays depends on the electrical power given to the X-ray tube.

Answer

Cut-off wavelength of the continuous X-rays depends on the energy of the electrons in the X-ray tube.

Dual Nature of Matter and Radiation

Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?

Choose the correct answer: