X raysHard
Question
The ionisation energies of K-shell for cobalt, copper, and molebdenum are 7.8, 9.0 and20.1 KeV respectively. If any metal out of these is used as target in an X-ray tube operated at 8 KV, then :-
Options
A.The K-series of characteristic X-ray will be emitted by Co only
B.The K-series of characteristic X-rays will be emitted by Cu and Co only.
C.The K-series of characteristic X-rays will be emitted by Cu, Co and Mo.
D.The minimum wavelength of continuous X-rays emitted by the three metals will not be same.
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