JEE Main 2023 (6 Apr, Shift 2) Physics Q50: Electric Dipoles

Question

A dipole comprises of two charged particles of identical magnitude q and opposite in nature. The mass 'm' of the positive charged particle is half of the mass of the negative charged particle. The two charges are separated by a distance 'l'. If the dipole is placed in a uniform electric field '

\bar{E}

'; in such a way that dipole axis makes a very small angle with the electric field, '

\bar{E}

'. The angular frequency of the oscillations of the dipole when released is given by:

(1) $\sqrt{\frac{4qE}{3ml}}$ Official answer
(2) $\sqrt{\frac{8qE}{3ml}}$
(3) $\sqrt{\frac{4qE}{ml}}$
(4) $\sqrt{\frac{8qE}{ml}}$

Official answer

Option 1

NTA final key.

Accepted Answer

Option 1: $\sqrt{\frac{4qE}{3ml}}$

Answer

$\sqrt{\frac{4qE}{3ml}}$

Answer

$\sqrt{\frac{8qE}{3ml}}$

Answer

$\sqrt{\frac{4qE}{ml}}$

Answer

$\sqrt{\frac{8qE}{ml}}$

JEE Main 6 April 2023, Shift 2, Physics Q50

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