Photoelectric EffectHard
Question
Given curve shows the intensity-wavelength relations of X-rays coming from two different Coolidge tubes A and B. The dark curve represents the relation for the tube A in which the potential difference between the target and the filament is VA and the atomic number of the target material is ZA . Similarly dotted curve is for tube B. These quantities are VB and ZB for the tube B. Then,
Options
A.VA > VB, ZA > ZB
B.VA > VB, ZA < ZB
C.VA < VB, ZA > ZB
D.VA < VB, ZA < ZB
Solution
(λkα)A > (λka)B ⇒ ZB > ZA
(λ off)A < (λcut off)B ⇒ VA > VB .
(λ off)A < (λcut off)B ⇒ VA > VB .
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