Physics-
General
Easy
Question
The energy of a tungsten atom with a vacancy in L shell is 11.3 KeV. Wavelength of 
photon for tungsten is 21.3 pm. If a potential difference of 62 KV is applied across the x-rays tube following characteristic x-rays will be produced.
- K, L series
- only & L series
- only L series
- none
& L series
The correct answer is: only L series
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