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An X-ray tube is operated at 20 kV. The ...

An X-ray tube is operated at 20 kV. The cut off wavelength is

A

`0.89 Å`

B

`0.75 Å`

C

`0.62 Å`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
`lambda_(min) = (12375)/(V(in volts)) in Å`
` = (12375)/(20xx10^3 = 0.62 Å.`
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