1.

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

Answer»

WAVELENGTH of characteristic X-rays decreases when the atomic number of the TARGET increases.
CUT-off wavelength of the continuous X-rays depends on the atomic number of the target.
Intensity of the characteristic X-rays depends on the ELECTRICAL POWER given to the X-ray tube.
Cut-off wavelength of the continuous X-rays depends on the energy of the electrons in the X-ray tube,

Solution :The cut of wavelength is given by `lambda_("min")=(hc)/(eV)`
The cut off wavelength depends on the energy eV of the acclerated electrons and is independent of the atomic number of target.


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