A train moving at uniform 90 km h is approaching a flag station whose platform is 500 m long Station master is standing a the

Question

A train moving at uniform 90 km h is approaching a flag station whose platform is 500 m long Station master is standing a the centre of the platform Train start blowing whistle when engine is 1 km awa from near end of the platform and continue blowing whistle till engine crosses of th platform without stopping If the speed c the sound is assumed to be 300 m s the the duration for which station master Hea the whistle is 1 55 80 sec 56 67 sec 60 00 sec 60 30 sec 3 4 25m 5 Vs 2300m

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