Physics · 2022
JEE Main · 25 July 2022, Shift 2 · Q36
Capacitance of an isolated conducting sphere of radius R_1 becomes n times when it is enclosed by a concentric conducting sphere of radius R_2…
Capacitance of an isolated conducting sphere of radius $\displaystyle \mathbf{R}_1$ becomes n times when it is enclosed by a concentric conducting sphere of radius $\displaystyle \mathbf{R}_{\mathbf{2}}$ connected to earth.
The ratio of their radii $\displaystyle \left(\frac{R_2}{R_1}\right)$ is :
Official answer
(1)
$\displaystyle \frac{n}{n-1}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.