Solved UPSC CDS/OTA Question
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Q · Boat and StreamMedium · 45s
Vinay fires two bullets from the same place at an interval of 12 minutes but Raju sitting in a train approaching the place hears the second report 11 minutes 30 seconds after the first. What is the approximate speed of a train (if sound travels at the speed of 330 metre per second)?
TopicBoat and Stream
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Final Answer: Option B — 220/7 m/s