Question

5 An observer puts ear on a railway in
500 m from a friend with a hammer. Whe
is friend hits the railway line with the
hammer the observer hears two sound
ic
The sound is first heard through:
(a) railway line
(D)
c) at the same time through railway line
and air
(d) no sound is heard​

Answer 1

Answer:

As tracks are solid therefore sound travels faster through tracks than through air and person can hear an approaching train .