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    Question

    A high-speed train moves at 45 m/s and crosses a stationary

    pole in 16 seconds. Calculate the approximate time required for the train to cross a 1200-metre-long tunnel.
    A 10 secs Correct Answer Incorrect Answer
    B 28 secs Correct Answer Incorrect Answer
    C 72 secs Correct Answer Incorrect Answer
    D 43 secs Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length of the train = 16 × 45 = 720 metres

    Time taken to cross the tunnel = (720 + 1200)/45 = 1920/45 = 42.67 seconds or 43 secs

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