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A potential difference of 20 kV is appli...

A potential difference of `20 kV` is applied across on X - ray tube. The minimum wavelength of X - rays generated is

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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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