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JEE MAIN 2025
29-01-2025 SHIFT-1
Question
An electric dipole of mass m, charge q, and length $l$ is placed in a uniform electric field $\overrightarrow {\rm{E}} = {{\rm{E}}_0}\hat i$. When the dipole is rotated slightly from its equilibrium position and released, the time period of its oscillations will be :
Select the correct option:
A
$\frac{1}{{2\pi }}\sqrt {\frac{{\;{\rm{m}}l}}{{2{\rm{q}}{{\rm{E}}_0}}}} $
B
$2\pi \sqrt {\frac{{{\rm{ml}}}}{{2q{{\rm{E}}_0}}}} $
C
$2\pi \sqrt {\frac{{\;{\rm{m}}l}}{{{\rm{q}}{{\rm{E}}_0}}}} $
D
$\frac{1}{{2\pi }}\sqrt {\frac{{2\;{\rm{m}}l}}{{{\rm{q}}{{\rm{E}}_0}}}} $
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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