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An X-ray tube operates at a voltage of 4...

An X-ray tube operates at a voltage of 40 kV. Find the continuous spectrum limit of the X-ray spectrum.

Text Solution

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The correct Answer is:
031 Å
The shortwave threshold is determined by the kinetic energy of the electrons bombarding the anti-cathode: `hc//lamdaleK`. But the kinetic energy of the electrons is itself determined by the accelerating potential: `K=evarphi`. Hence
`lamdalehc//evarphi`
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