Question

Bridges are mounted on the rollers.

• A. True
• B. False

Answer 1

The correct option is A True

1. Iron girders are used to construct the bridge.
2. The one end of them is kept fixed but the other end rests on rollers.
3. In summer, temperature increases, and iron girders expands.
4. The expansion is allowed towards the end of the roller because the fixed end cannot be expanded.
5. Hence, rollers are used to allow expansion through the gap.

Hence, the given statement is true.