A bar magnet having centre `O` has a length of `4 cm`. Point `P_(1)` is in the broad side-on and `P_(2)` is in the end side-on position with `OP_(1)=OP_(2)=10 metres`. The ratio of magnetic intensities `H` at `P_(1)` and `P_(2)` is

Options

A. `H_(1):H_(2)=16:100`
B. `H_(1):H_(2)=1:2`
C. `H_(1):H_(2)=2:1`
D. `H_(1):H_(2)=100:16`

Answer

b

Explanation

(b) Magnetic intensity on end side -on position is twice than broad side on position.