An insulating rod of uniform linear charge density A and uniform linear mass density `mu` lies on a smooth table whose surface is `xy`-plane. A uniform electric field E is switched on in the space:

Options

A. If electric field is along x-axis, the speed of the rod when it has travelled a distance `d` is `sqrt((2 lambda Ed)/(mu))`
B. If electric field Eis at an angle `theta (lt 90^(@))` with x-axis along the table surfa~e then the speed of the rod when it has travelled a distance `d` is `sqrt((2 lambda E d cos theta)/(mu))`
C. A non zero torque acts on the rod due to the field about centre of mass in case electric field is into the plane of paper.
D. A non zero torque acts on the rod due to the field about centre of mass in case electric field is along the surface of table.