Question

5. Small gaps are left between two successive rails because
a. it allows bending of rails.
b. it provides space for expansion of rails.
c. it provides space for contraction of rails.
d. it is a better way of constructing railway lines.​

Answer 1

Explanation:

The gap is left between the rails to provide a space for the iron metal to expand and contract during the summer and winter season due to the change in the temperatures. If the gap is not left in between then the rails will bend more and cause derailing of the trains.

Answer 2

Answer:

The gap is left between the rails to provide a space for the iron metal to expand and contract during the summer and winter season due to the change in the temperatures. If the gap is not left in between then the rails will bend more and cause derailing of the trains.

b. it provides space for expansion of rails.

Explanation:

reason above