JEE Main Physics question
A steam boat goes across a lake and comes back (i) on a quiet day when the water is still, and (ii) on a rough day when there is a uniform current so as to help the journey onwards and to impede the journey back. If the speed of the launch on both days was the same, the time required for the complete journey on the rough day, as compared to the quiet day, will be
Answer: (A)
Solution
With a current, the time saved going with the current is always less than the extra time lost going against it (since the average of
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