Photoelectric EffectHard
Question
The ionisation energies of K-shell for cobalt, copper, and molebdenum are 7.8, 9.0 and 20.1 keV respectively. If any metal out of these is used as target in an X-ray tube operated at 15kV, 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.
More Photoelectric Effect Questions
50% of X-rays obtained from a Coolidge tube pass through 0.3 mm. thick aluminium foil. If the potential difference betwe...The work done in blowing a soap of radius 0.2m given that the surface tension of soap solution is 60 × 10-3 N/M is...The order of energy of X-ray photon is :-...for maximum λ = (n1 = 2 → n2 = 1 Lymen (n1 = 3 → n2 = 2 BalmerLongest λLymen = Longest λBalme...If a hydrogen atom at rest, emits a photon of wavelength λ, the recoil speed of the atom of mass m is given by :...