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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:
B

`lambda_(min) = (6.63 xx 10^(-34) xx 3 xx 10^(8))/(1.6 xx 10^(-19) xx 20 xx 10^(2)) = 0.62 Å`
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