Question

5. An observer puts ear on a railway line
500 m from a friend with a 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​

Answer 1

Answer:

(a) railway line

Hope it helps you

Answer 2

Answer:

railway line

hope it helped you