A) 25
B) 26
C) 100
D) 99
Correct Answer: B
Solution :
From the relation, \[\lambda \propto \frac{1}{{{(Z-1)}^{2}}}\] First case Given that, \[Z=51\] i.e. \[\lambda \propto \frac{1}{{{(51-1)}^{2}}}\propto \frac{1}{{{(50)}^{2}}}\] Second case \[4\lambda \propto \frac{1}{{{(Z-1)}^{2}}}\] \[\Rightarrow \] \[\frac{4}{{{(50)}^{2}}}=\frac{1}{{{(Z-1)}^{2}}}\] \[\left( \because \,\,\,\,\lambda \propto \frac{1}{{{(50)}^{2}}} \right)\] \[\Rightarrow \] \[Z=26\]You need to login to perform this action.
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