Assertion (A) : Speed is a scalar physical quantity
Reason (R) : Speed does not follow vector law of addition

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Both A and R are correct and R is the correct explanation of A

Both A and R are correct , but R is not the correct explanation of A

A is correct and R is incorrect

A is incorrect and R is correct

answer is B.

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Detailed Solution

A,C,D are not correct, because we cannot say that the physical quantities which does not follows vector law of addition are scalars, speed is a scalar, it has only magnitude.

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