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
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Answers
Answered by
7
Answer:
a.) is correct because metal is best conductor of sound..
Answered by
5
Answer:
a) railway line
Explanation:
sound travels faster in solids than in liquids or gas
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