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The distance of two points on the axis o...

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

20 cm

B

10 cm

C

25 cm

D

5 cm

Text Solution

Verified by Experts

The correct Answer is:
D
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