When a train is at a distance of 2 km , its engine sounds a whistle . A man near the railway track hears the whistle directly and by placing his ear against the track of thetrain. If the two sounds are heard at an internal of 5.2 s, the speed of the sound in iron ( material of the rail track ) is : (Given that velocity of sound in air is 330 m s ^(_1) )

When a train is at a distance of 2 km , its engine sounds a whistle .

1.	When a train is at a distance of 2 km , its engine sounds a whistle . A man near the railway track hears the whistle directly and by placing his ear against the track of thetrain. If the two sounds are heard at an internal of 5.2 s, the speed of the sound in iron ( material of the rail track ) is : (Given that velocity of sound in air is 330 m s ^(_1) )
Answer» `2,325.6 MS^(-1)` `1,932.4 ms^(-1)` `2,132.5 ms^(-1)` `3,213.2 ms ^(-1)` ANSWER :A

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