COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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65 sec
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89 sec
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100 sec
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150 sec
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Detailed explanation-1: -We have given a 240 m long train and the time it takes to cross a pole is 24 seconds and we are asked to find the time that the same train will take to cross a 650 m platform. Hence, we got the speed of the train as 10 m/s. From the above calculations, the train will take 89 seconds to cross the platform.
Detailed explanation-2: -Expert-Verified Answer. Answer: Required time is 10.8 seconds.
Detailed explanation-3: -Correct Answer: C) 18 metres/sec. We know that when a train crosses a platform, it covers a distance equal to the sum of its length and that of platform.
Detailed explanation-4: -∴ The speed of the train is 72 km/hr.
Detailed explanation-5: -Length of platform = total distance covered – length of the train. ∴ Length of the platform is 375 meter.