Figure shows the intensity-wavelength relations of X-rays coming from two different Coolidge tube. The solid curve represents the relation for the tube A in which the potential difference between the target and the filament is `V_a` and the atomic number of the target material is `Z_A`. These quantities are `V_beta` and `Z_beta` for the other tube. Then,

Options

A. `V_(A) gt V_(B), Z_(A) gt Z_(B)`
B. `V_(A) gt V_(B),Z_(A) lt Z_(B)`
C. `V_(A) lt V_(B),Z_(A) gt Z_(B)`
D. `V_(A) lt V_(B), Z_(A) lt Z_(B)`

Answer

B

Explanation

`{:((lambda_(kalpha)) gt(lambda_(kalpha))_(B)" "rArr " "Z_(B) gt Z_(A)),((lambda_("cut off"))_(A) lt (lambda_("cut off"))_(B)"rArrV_(A) gt V_(B)):}`