If a diamagnetic substance is brought near south or north pole of a bar magnet it is a. Attracted by the poles b. Repelled by the polesc. Attracted by north pole and repelled by south pole d. Attra...
Answer is B.
Why are the pole pieces of magnets cut into cylindrical form in a galvanometer?
In a galvanometer, the pole pieces of magnets are often cut into cylindrical form to enhance the uniformity and strength of the magnetic field within the coil.