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An X-ray tube is operated at 6.6 kV. In ...

An X-ray tube is operated at `6.6 kV`. In the continuous spectrum of the emitted X-rays, which of the following frequency will be missing?

A

`10^(18) Hz`

B

`1.5 xx 10^(18) Hz`

C

`2 xx 10^(18) Hz`

D

`2.5 xx 10^(18) Hz`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`V = 6.6 kV = 6600 V`
Now, `v_(max) = (e V)/(h) = (1.6 xx 10^(-19) xx 6600)/(6.6 xx 10^(-34))`
`= 1.6 xx 10^(18) Hz`
Thus the frequency of the X-rays cannot exceed `1.6 xx 10^(18)Hz`. Hence the correct choices are ( c) and (d).
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