Question

State whether the statements are true or false. Correct the wrong statement

1. Sagging of telephone and electric wires is due to superficial expansion. please give me answer​

Answer 1

∆Answers :

→The answer is False.

Since metals expand with a rise in temperature, therefore telephone wires sag in summers. .

→Information :

The telephone wires are made up of copper or aluminum which has a very high thermal expansion coefficient, therefore they expand in summers i.e. when they are subjected to heat..

Answer 2

Answer:

True

Explanation:

I not clear but may this answer you can check it