Problems on magnetism ..good one for jee aspirants

Hi,

Here's a link

https://www.dropbox.com/s/eui7c2php1gvfxh/12th%202problems%20on%20magnetism...pdf

Viresh

Answers :

1-(I) 0 ; E /3 (ii) E/ 2eR. 2- mg tan(theeta)/(NBl) where l is the length of the cylinder.