Q6 of 59 Page 393

Moseley’s law for characteristic X-rays is √v = a (Z – b). In this,

In Moseley’s law, “a” represents the proportionality constant while “b” represents the screening constant, with independent of the target material.

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4

If the potential difference applied to the tube is doubled and the separation between the filament and the target is also doubled, the cutoff wavelength

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If the current in the circuit for heating the filament is increased, the cutoff wavelength

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Frequencies of Kα X-rays of different materials are measured. Which one of the graphs in figure may represent the relation between the frequency v and the atomic number Z.

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 8

The X-ray beam coming from an X-ray tube