NEET2016Physics-Kinematics
NEET 2016 Physics Circular Motion MCQ Question
Type: MCQ-conceptual-Medium-Class 11
A particle moves so that its position vector is given by r⃗ = cosωt î + sinωt ĵ, where ω is a constant. Which of the following is true?
A
Velocity is perpendicular to r⃗ and acceleration is directed towards the origin.
B
Velocity is perpendicular to r⃗ and acceleration is directed away from the origin.
C
Velocity and acceleration both are perpendicular to r⃗.
D
Velocity and acceleration both are parallel to r⃗.
Correct Answer
Option A
Detailed Explanation
The particle moves in a circle, so the velocity is tangent to the circle and perpendicular to the radius vector. The acceleration is centripetal, directed towards the origin.
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