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 .