A) \[F=0,\,\tau \ne 0\]
B) \[F\ne 0,\,\tau =0\]
C) \[F=0,\,\tau =0\]
D) \[F\ne 0,\,\tau \ne 0\]
Correct Answer: C
Solution :
Electric field due to infinite charge plane is uniform and due to induced charge the sphere behave as dipole which has net force zero. since dipole moment is parallel to the field hence net torque zero.
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