AP EAMCET Engineering 17 Sep 2020 Shift 1 Paper

An electric dipole is situated in an electric field as shown in figure. The dipole and electricfield are both in the plane of paper. The dipole is rotated about an axis, perpendicular to thepaper, at point A in anticlockwise direction. If the angle of rotation is measured with respectto the direction of the electric field then the torque for different values of the angle of rotationθ is correctly represented by which graph among a,b,c,d given in fig(b)?