Question

When a magnet is placed with its North pole facing North direction, the null points will be:

• A. o its equatorial line
• B. on its axial line
• C. on a line making ${45}^0$ with axial line
• D. At a distance equal to twice the length of magnet, both on axial and equatorial line

Answer 1

The correct option is A o its equatorial line

Given

A magnet is placed with its north pole facing north direction.

Solution

Null point is that point where magnet 's field is neutralized by horizontal component of earth magnetic field

Here there will be two points on equatorial line as null points shown in image.

The correct option is A