The bob of a simple pendulum has |ElectrostaticsJEEMain2019

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JEE MAIN 2019

08-04-2019 S1

Question

The bob of a simple pendulum has mass 2 g and a charge of $5.0 \mu \mathrm{C}$. It is at rest in a uniform horizontal electric field of intensity $2000 \mathrm{~V} / \mathrm{m}$. At equilibrium, the angle that the pendulum makes with the vertical is $\left(\right.$ take $\left.\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\right)$

Select the correct option:

A

$\tan ^{-1}(0.2)$

B

$\tan ^{-1}(5.0)$

C

$\tan ^{-1}(2.0)$

D

$\tan ^{-1}(0.5)$

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