Q.No.172: - Suppose someone handed you three similar iron bars and told you one was not magnet but the other two were. How would you find the iron bar that was not magnet?

Q.No.172: - Suppose someone handed you three similar iron bars and told you one was not magnet but the other two were. How would you find the iron bar that was not magnet?

Ans: - We will place compass needle near these three iron bar. The compass needle will show response near magnet. So when we take compass needle near the iron bar and if this compass needle did not changes its direction then this means that this iron bar is not a magnet.