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B
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C
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D
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Solution
The correct option is B From given v−t curve, v is depending on time parabolically and parabola is symmetric about v−axis so, we can say that v∝t2 or v=kt2, where k is any constant ∴dvdt=a⇒a=d(kt2)dt⇒a=2kt
i.e. a is proportional to t and after that velocity is constant i.e. acceleration becomes zero. So, the graph (b) is most probable graph