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Find the cutoff wavelength for the conti...

Find the cutoff wavelength for the continuous X-rays coming form an X-ray tube operating at 30 kV.

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`V=30KV `
` lambda=(hc)/E=(hc)/(eV )`
` =(1242eV-nm)/(exx30xx10^3) `
` 414xx10^-4nm=41.4Pm`
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