Question

The iron rim to be mounted on a wooden cartwheel has a slightly smaller diameter than the wooden wheel.

• A. True
• B. False

Answer 1

The correct option is A True

1. The iron rims will undergo thermal expansion in the summer season.
2. Thermal expansion is the expansion happening in substances when heated.
3. If the iron rims are expanding, then they will get loosened from the wooden wheel.
4. To avoid this kind of situation iron rims are mounted to the wooden wheel in a way that iron rims are having lesser diameter than the wheel to hold them tightly after expansion also.

Hence the given statement is true.