A current l is flowing through a long st...

A current l is flowing through a long straight solid conductor of radius R = 4 cm. Magnetic field at a distance 2 cm from the axis of conductor is `B_0` The distance from the axis, where magnetic field is 1.5 `B_0` is (current density is uniform)

A

3 cm

B

`16/3` cm

C

6 cm

D

Both (1) and (2)

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