Two particles A and B are moving in uniform circular motion in concentric circles of radii r_A and r_B with speed v_A and v_B respectively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be :

1. \(r_A : r_B\)

2. \(v_A : v_B\)

3. \(r_B : r_A\)

4. 1 : 1

Doubtly Asked 30 Oct 2026 NEET UG 2019 Practice test neet Save WhatsApp Report

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Answer: 4. 1 : 1

Angular speed \(\omega=\dfrac{2\pi}{T}\). Both particles have the same period \(T\), so they have the same angular speed.

\(\omega_A:\omega_B=1:1\). (Their linear speeds differ: \(v=\omega r\).)

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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