Answer:
(a)
(i) The approximate value for the speed of sound in air is 344 m/s.
(ii) Distance = 300 m. Speed = 5000 m/s
Time taken
(b) As we know, the speed of sound is different in different materials.
Sound travels about 15 times faster in steel than in air. The man hears two
sounds one through air and other through railway line made of steel.
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