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Olympiad-Science
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Class 9
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Q)
A train 100 m long is moving with a velocity of 60 km/hr. The time it takes to cross 1 km bridge is
$\begin{array}{1 1} (a)\; 60 s \\ (b)\; 66 s \\ (c)\; 30 s \\ (d)\; 33 s \end{array}$
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