A) \[\sqrt{\frac{1}{\rho }}\]
B) \[\frac{3}{\sqrt{\rho }}\]
C) \[\frac{1}{\rho }\sqrt{3}\]
D) \[\rho \sqrt{\frac{1}{3}}\]
Correct Answer: B
Solution :
\[\text{Volume}=Al=3\Rightarrow A=\frac{3}{l}\] \[\text{Now}\]\[R=\rho \frac{l}{A}\Rightarrow 3=\frac{\rho \times l}{3/l}=\frac{\rho {{l}^{2}}}{3}\]\[\Rightarrow {{l}^{2}}=\frac{9}{\rho }=\frac{3}{\sqrt{\rho }}\]
You need to login to perform this action.
You will be redirected in
3 sec
