The distance of two points on the axis of a magnet from its centre is – McqOptions

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1.	The distance of two points on the axis of a magnet from its centre is 10 cm and 20 cm respectively. The ratio of magnetic intensity at these points is 12.5 : 1. The length of the magnet will be
A.	5 cm
B.	25 cm
C.	10 cm
D.	20 cm
Answer» D. 20 cm

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