Question

The work done in turning a magnet of magnetic moment M by an angle of 90° from the meridian, is n times the corresponding work done to tum it through an angle of 60°. The value of n is given by

(a) 1/2 

(b) 1/4

(c) 2 

(d) 1

Answer 1

Correct option  (c) 2 

Explanation:

Angle of magnet (θ) = 90° and 60°. Work done in turning the magnet through 90°