A rod is hinged (free to rotate) ast its centre O as shown in figue. Two point charge `+q` and `+q` are kept at its two ends. Rod is placed in uniform electric field E as shown. Space is gravity free. Choose the correct options.

A bead is contrained to move on rod in granvity free space as shown in figure. The rod rotating with ,angular velocity and angulnr acceleration alpha about its end. If mu is coefficient of friction. Mark the correct option. ( Rod rotates in the plane of paper.)

A bead is contrained to move on rod in granvity free space as shown in figure. The rod rotating with ,angular velocity and angulnr acceleration alpha about its end. If mu is coefficient of friction. Mark the correct option. ( Rod rotates in the plane of paper.)

A bead is contrained to move on rod in granvity free space as shown in figure. The rod rotating with ,angular velocity and angulnr acceleration alpha about its end. If mu is coefficient of friction. Mark the correct option. ( Rod rotates in the plane of paper.)

A uniform rod of length L and mass m is free to rotate about a frictionless pivot at one end as shown in figure. The rod is held at rest in the horizontal position and a coin of mass m is placed at the free end. Now the rod is released The reaction on the coin immediately after the rod starts falling is

A uniform rod of length L and mass m is free to rotate about a frictionless pivot at one end as shown in figure. The rod is held at rest in the horizontal position and a coin of mass m is placed at the free end. Now the rod is released The reaction on the coin immediately after the rod starts falling is

A positive point charge Q is kept (as shown in the figure) inside a neutral conducting shell whose centre is at C. An external uniform electric field E is applied. Then :

A rod OA is suspended with the help of a massless string AB as shown in figure. Rod is hinged at point O . Draw free body diagrame of the rod.

A rod OA is suspended with the help of a massless string AB as shown in figure. Rod is hinged at point O . Draw free body diagrame of the rod.

Two particles, carrying charges -q and +q and having equal masses m each, are fixed at the rod is clamped at an end and is placed in a uniform electric field E with the axis of the dipole along the electric field. The rod is slightly tlted and then released. Neglecting gravity find the time period of small oscillations.