NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Analyzing +4 | -1

Assertion (A) : Velocity and acceleration of a particle in circular motion at some instant are:

\mathbf{v}=(2 \hat{\mathbf{i}}) \mathrm{ms}^{-1}

and

\mathbf{a}=(-\hat{\mathbf{i}}+2 \hat{\mathbf{j}}) \mathrm{ms}^{-2}

, then radius of circle is

2 \mathrm{~m}

.

Reason (R) : Speed of particle is decreasing at a rate of

1 \mathrm{~ms}^{-2}

View answer and explanation

Correct option: B

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

The correct answer is B. Both the Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion. The radius can be calculated using centripetal acceleration, and the speed is indeed decreasing at a rate of 1 m/s².

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