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The binding energy of the innermost elec...

The binding energy of the innermost electron in tungsten is `40 keV`. To produce characteristic `X` - rays using a tungsten target in an `X` - rays tube the potential difference `V` between the cathode and the anti - cathode should be

A

`V lt 40 kV`

B

`V le 40 kV`

C

`V gt 40 kV`

D

`V gt//lt 40 kV`

Text Solution

Verified by Experts

The correct Answer is:
C
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