For the situation shown in the figure (`r gt gt` length of dipole) mark out the correct statement(s)

Options

A. Force acting on the dipole is zero
B. Force acting on the dipole is approximately `(pQ)/(4piepsilon_(0)r^(2))` and is acting upward
C. Torque acting on the dipole is `(pQ)/(4piepsilon_(0)r^(2))` in clockwise direction
D. Torque acting on the dipole is `(pQ)/(4piepsilon_(0)r^(2))` in anti-clockwise direction

Answer

B, C

Explanation

Electric field due to dipole at the point of charge Q is `(KP)/r^3` in downward
From on dipole =`1/(4 pi e_0) (QP)/r^3` in upward
`overlinet=overlineP times overlineE , |overlineT|=(PQ)/(4 pi e_0 r^2)` In clockwise