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Q.

Directions:These questions consists of two statements each printed as Assertion and Reason. Whileanswering these questions you are required to choose anyone of the following four responses.Assertion :The v- t graph perpendicular to time axis is not possible in practice.Reason: Infinite acceleration cannot be realised in practice.

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a

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

b

If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion,

c

If Assertion is correct but Reason is incorrect.

d

If Assertion is incorrect but Reason is correct.

answer is A.

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Detailed Solution

a=dvdt= slope of v-t graph.Perpendicular to t-axis, slope = ∞, therefore a = ∞Also at a given instant of time a particle cannot have different velocities .
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