Question

An Observer puts ear on a railway line 500 m from a friend with hammer. When his friend hits the railway line with the hammer, the Observer hears two sounds. The sound is first heard through :

A. Railway Line.
B. Air.
C. At The Same Time Through railway line and air.
D. No sound is heard.
​
Plea Help Me

Answer 1

Answer:

The railway line

Explanation:

Sound travels faster in solids than in gases.