From point A located on a highway (figure) one has to get by car as soon as possible to point B located in the field at a distance `l` from the highway. It is known that the car moves in the field `eta` times slower than on the highway. At what distance from point D one must turn off the highway?

A man in a car at location Q on a straight highway is moving with speed v He decides to reach a point P in a field at a distance d from the highway (point M) as shown in th e figure . Speed of the car in the field is half to that on the highway what should be the distacne RM so that the time taken to reach P is minimum ?

Figure shows a point charge +Q, located at a distance R/2 from the centre of a spherical metal shell. Draw the electric field lines for the given system.

A point charge +q, is placed at a distance d from an isolated conducting plane. The field at a point P on the other side of the plane is

The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of a/2 from its centre (as shown is)

What is the ratio of electric field intensity at a point on the equatorial line to the field at a point on axial line when the points are at the same distance from the centre of the dipole ?

A point charge +q is placed at a distance d from an isolated conducting plane. The field at a point P on the other side of plane is