A charged ball B hangs from a silk thread S, which makes an angle $\theta$ with a large charged conducting sheet P, as shown in the figure. The surface charge density $\sigma$ of the sheet is proportional to : <br>

Question

https://clay6.com/mpaimg/908_a.jpg

( A ) $\sin \theta$
( B ) $\tan \theta$
( C ) $\cot \theta$
( D ) $\cos \theta$