Question

only say the answer for distance of each pole from farther end.distance from nearer pole =2cm
pls say the answer. no spams kindly​

Answer 1

Explanation:

Correct option is

D

8:1approximately

For a magnet B=4πμ0r32M(nearly)

⇒B1B2=(r2r1)3

⇒B1B2=(2xx)3⇒B1B2=81.

Thus, B1:B2=8:1 approximately