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Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristics K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.
Cell containing vacancy K L M
Energy in keV 69.5 11.3 2.3

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Let for , k series emission, the potential `required=V `
` :. Energy of electrons =eV `
` This amount of energy =energy =Energy of I Shell.`
`So, the mazimum potential difference`
that can be applied without emitting any electron is `11.3eV`
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HC VERMA-X-Rays-Exercises
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  2. The electron beam in a colour TV is accelerated through 32 kV and then...

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  3. When 40 kV is applied across an X-ray tube, X-ray is obtained with a m...

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  4. An X-ray tube operates at 40 kV. Suppose the electron converts 70% of ...

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  5. The wavelength of Kalpha X-ray of tungsten is 21*3 pm. It takes 11*3 k...

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  6. The Kbeta X-ray of argon has a wavelength of 0.36 nm. The minimum ener...

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  7. The kalpha X-rays of aluminium (Z = 13 ) and zinc ( Z = 30) have wavel...

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  8. A certain element emits Kalpha X-ray of energy 3*69 keV. Use the data ...

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  9. The kbeta X-rays from certain elements are given below. Draw a Moseley...

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  10. Use Moseley's law with b = 1 to find the frequency of the Kalpha X-ray...

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  11. The Kalpha and Kbeta X-rays of molybdenum have wavelengths 0*71 A and ...

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  12. The wavelength of Kalpha and Lalpha X-rays of a meterial are 21.3 pm a...

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  13. The energy of a silver atom with a vacancy in K shell is 25.31 keV, in...

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  14. Find the maximum potential difference which may be applied across an X...

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  15. The electric current in an X-ray tube (from the target to the filament...

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  16. Heat at the rate of 200 W is produced in an X-ray tube operating at 20...

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  17. Continuous X-rays are made to strike a tissue paper soaked with pollut...

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  18. A free atom of iron emits Kalpha X-rays of energy 6.4 keV. Calculate t...

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  19. The stopping potential in a photoelectric experiment is linearly relat...

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  20. Suppose a monochromatic X-ray beam of wavelength 100 pm is sent throug...

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