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A potential diffrence , the 20kv is appl...

A potential diffrence , the `20kv` is applied across an X- ray s tube . The minimum wavelength of x- ray generated is …….` Å` .

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The correct Answer is:
`0.62A^(@)`
`2000eV=(hc)/(lambda)=(1240)/(lambda(nm))`
`lambda=(1240)/(20000)=62xx10^(-3)nm=0.62Å`
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