Directions : These questions consists of two statements each printed as Assertion and Reason. Whileanswering these questions, you are required to choose any one of the following four responses.Assertion : If a particle moves with a constant velocity, then angular momentum of this particleabout any point remains constant.Reason : Angular momentum has the units of Planck's constant.

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

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

If Assertion is correct but Reason is incorrect.

If Assertion is incorrect but Reason is correct.

answer is B.

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Detailed Solution

L=mvrsinθ or mvr⊥In case of constant velocity, m, v and r⊥ all are constants.Therefore, angular momentum is constant.Further, L=nh2π (in Bohr's theory).Therefore, L and h have same units.

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