NEET2019Physics-Circular Motion
NEET 2019 Physics Angular Speed MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Two particles A and B are moving in uniform circular motion in concentric circles of radii r₁ and r₂ with speed v₁ and v₂ respectively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be:
A
r₂ : r₁
B
1 : 1
C
r₁ : r₂
D
v₂ : v₁
Correct Answer
Option B
Detailed Explanation
Since the time period is the same, T = 2πr₁/v₁ = 2πr₂/v₂. Angular speed ω = v/r, so ω₁/ω₂ = (v₁/r₁)/(v₂/r₂) = r₂/r₁.
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