Q.

If an electric dipole is kept in an uniform electric field then

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a

linear acceleration of its centre of mass is zero.

b

angular acceleration about its centre of mass is zero.

c

both linear and angular accelerations must be zero.

d

neither linear nor angular acceleration are zero.

answer is A.

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Detailed Solution

Only the net force acting on the dipole is zero, the net torque may not be zero. Hence only linear acceleration is zero.

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