Question

A bar magnet is hammered for some time. Its magnetic strength:

• A. is likely to increase
• B. is likely to decrease
• C. will not change
• D. none of the above

Answer 1

The correct option is B

is likely to decrease

Explanation of correct option:

Option (b):

1. The magnetic property of a magnet can be lost if it is hammered continuously.
2. It will become an only an iron bar, not a magnet
3. By hammering the magnet frequently its magnetism will decrease.

Explanation of incorrect option:

(a) Magnetic property will increase only when kept properly and not hammering it.

(c) Magnetic property will not change if magnets are taken care of properly.

(d) None of the above.

So, the correct option is (b).