1.

The potential difference applied to an X-ray tube is V The ratio of the de Broglie wavelength of electron to the minimum wavlength of X-ray is directrly proportional toA. V voltB. `sqrtV`C. `V^((3)/(2))`D. `V((7)/(2))`

Answer» Correct Answer - B
`lamda=(h)/(sqrt(2meV))`
`(hc)/(lamda_(min))=eV`
`lamdaxx(hc)/(lamda_(min))=(h)/(sqrt(2meV))eV` or `(lamda)/(lamda_(min))propsqrtV`


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