Calculate the cut-off wavelength and cut...

Calculate the cut-off wavelength and cutoff frequency of x-rays from an x-ray tube of accelerating potential 20,000 V.

Text Solution

Verified by Experts

The cut-off wavelength of the characteristic X-rays is
`lambda_(0)=(12400)/(V)` `A=(12400)/(20000)A`=0.62A
The corresponding frequency is
`V_(0)=(c)/(lambda_(0))=(3xx10^(8))/(0.62xx10^(-10))=4.84xx10^(18Hz`

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The wavelength of range of x-rays is _____ (m).

`10^(-4) " to" 10^(-2)`

`10^(-14)" to" 10^(-9)`

`10^(-10) " to "3 xx 10^(-8)`

`10^(-3)" to" 10^(-5)`

The minimum wavelength of X-rays produced in an X-ray tube at 1000 kV is

0.0124 Å

0.124 Å

1.24 Å

0.00124 Å

The shortest wavelength of X-rays, emiited from a X-ray tube, depend upon

current in the tube

voltage applied to the tube

nature of glass material in the tube

atomic number of the target material