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A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is :(1) B (2) C (3) D (4) A |
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Answer» Correct option is (1) B Initially speed is zero, then increases & after some time it becomes constant. Acceleration (slope of v/t curve) of ball first decreases and after some time it becomes zero. |
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