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Find the cut off wavelength for the con...

Find the cut off wavelength for the continuous X - rays coming from an X-ray tube operating at 40 kV.

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The correct Answer is:
`lambda=(hc)/(40xx10^(3)e)m=31.05 "pm"`
`lambda=(hc)/(40xx10^(3)e)m=31.05"pm"`
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