Question

The bob of simple pendulum is hanging vertically down from a fixed identical bob by means of string of length $l$. If both bobs are charged with a charge with a charge $q$ each, time period of the pendulum is (ignore the radii of the bobs)

Accepted Answer

$2\pi \sqrt {\frac{l}{{\rm{g}}}} $

Answer

$2\pi \sqrt {\frac{l}{{{\rm{g}} + \left( {\frac{{{q^2}}}{{{l^2}m}}} \right)}}} $

Answer

$2\pi \sqrt {\frac{l}{{{\rm{g}} - \left( {\frac{{{q^2}}}{{{l^2}m}}} \right)}}} $

Answer

$2\pi \sqrt {\frac{l}{{{\rm{g}} - \left( {\frac{{q2}}{l}} \right)}}} $

NEET UG PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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