A) Cu
B) Au
C) Be
D) Pb
Correct Answer: D
Solution :
X-rays are absorbed when they are incident on substance. Intensity of emergent X-rays\[I={{I}_{0}}{{e}^{-\mu x}}\] where\[x=\]thickness of absorbing medium, \[\mu =\]absorption coefficient. but \[\mu \propto {{\lambda }^{3}}\] \[\mu \propto {{v}^{3}}\]and \[\mu \propto {{Z}^{4}}\] Among the given elements Z is maximum for \[Pb[{{Z}_{cu}}=29,\text{ }{{Z}_{Be}}=4,\text{ }{{Z}_{pb}}=82,\text{ }{{\text{Z}}_{\text{A}u}}=79]\]
You need to login to perform this action.
You will be redirected in
3 sec
