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The graph that correctly represents the ...

The graph that correctly represents the relation of frequency V of a particle characteristic X-ray with the atomic number Z of the material is

A

`f prop sqrt(Z)`

B

`f prop Z^(2)`

C

`f prop Z`

D

`f prop Z^(1//2)`

Text Solution

Verified by Experts

The correct Answer is:
B
According to Mosely's law
`(Z-sigma)prop sqrt(f)" or, "f prop (Z-sigma)^(2)`.
Note: The correct answer should have been `fprop (Z-sigma)^(2)` where `sigma` is the screening constant. Many authors use at this level, `sigma=1` approximately.
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