Question

Expansion on heating can be a nuisance. Explain giving two examples
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Answer 1

Explanation:

Examples of nuisance of thermal expansion

1. Due to high temperature in hot summer, the railway rails may expand and change theirirregular shape. This may cause derailment of trains which travel on the track. This can be prevented by leaving small space between successive rails.

2. Due to high temperature in hot summer, cement floors or walls may give cracks.

Answer 2

Answer:

1 ) Due. This may cause derailment of trains which travel on the track . This can be prevented by leaving small space between successive rails .

2 ) Due to high temperature in hot summer , cement floors or walls may give cracks .