Question

The diagram shows two magnets and two iron rods placed in a line.
Which magnetic poles are induced at the ends $J$ and $K$ of the iron rods?

• A. Pole induced at end $J$ - $N$, pole induced at end $K$ - $N$
• B. Pole induced at end $J$ - $N$, pole induced at end $K$ - $S$
• C. Pole induced at end $J$ - $S$, pole induced at end $K$ - $N$
• D. Pole induced at end $J$ - $S$, pole induced at end $K$ - $S$

Answer 1

The correct option is B Pole induced at end $J$ - $N$, pole induced at end $K$ - $S$

Iron Rods will become magnetised and behave as magnet. The pole on iron rode will be complementary to the what is on the magnets. So at J, it should be complementary of South pole of the magnet hence is it North pole.

In the other iron rod pole near the south pole of magnet will be North pole so the other one (K) is South pole.

North at J and South at K