Statement I: x-t graph, for a particle undergoing rectilinear motion, can be as shown in the figure.
Statement II : Infinitesimal changes in velocity are physically possible only in infinitesimal time.

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If assertion is true but reason is false.

IF both assertion and reason are true but reason is not the correct explanation of assertion.

If both assertion and reason are true and reason is a true explanation of assertion.

IF both assertion and reason are false.

answer is D.

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Detailed Solution

At the high point of the graph velocity (slope of x-t curve) changes suddenly from a positive to a negative value. This is physically impossible.

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