1.

An electric dipole is formed by two equal and opposite charges q with separation d. The charges have same mass m. It is kept in a uniform electric field E. If it is slightly rotated from its equilibrium orientation, then its angular frequency ω is:

A. \({\rm{\;}}\sqrt {\frac{{{\rm{qE}}}}{{{\rm{md}}}}} \)
B. \({\rm{\;}}\sqrt {\frac{{2{\rm{qE}}}}{{{\rm{md}}}}} \)
C. \({\rm{\;}}2\sqrt {\frac{{{\rm{qE}}}}{{{\rm{md}}}}} \)
D. \({\rm{\;}}\sqrt {\frac{{{\rm{qE}}}}{{2{\rm{md}}}}} \)
Answer» C. \({\rm{\;}}2\sqrt {\frac{{{\rm{qE}}}}{{{\rm{md}}}}} \)


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