A particle is moving in a circle of radius 'r'. In one period of revolution, its displacement and distance covered are:
Correct answer: D. Zero, 2πr
- A. 2πr, 2πr
- B. π, 2πr
- C. 2π, 2πr
- D. Zero, 2πr
Explanation
The correct answer is option D: Zero, 2πr. The particle's displacement is zero, and the distance covered is 2πr during one period of revolution. During one period of revolution, the particle starts and ends at the same position (initial position). As a result, its displacement is zero. However, the particle covers the entire circumference of the circle during one revolution, which is 2πr (the distance covered).
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Displacement and Velocity
Displacement is the directed change in position, while velocity is the rate of change of displacement and includes both magnitude and direction. The topic connects position-time and velocity-time graphs with average and instantaneous values, and distinguishes displacement from distance and velocity from speed.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Displacement and Velocity questions
A particle comes around a circle of radius 1m once. The time taken by it is 10sec. The average velocity of motion is
The area under a velocity time graph represents
Displacement is a:
A particle comes round a circle of radius 1m once. The time taken by it is 10sec. The average velocity of motion is
The displacement of a body is zero the distance covered by it .........
Two cars are moving in opposite directions with speed v. What is the magnitude of their relative velocity?