The angle subtended at the center of a circle by an arc equal to its radius is equal to:
Correct answer: A. One radian
- A. One radian
- B. One rotation
- C. One degree
- D. Half rotation
Explanation
The angle subtended at the center of a circle by an arc equal to its radius is defined as one radian. In a circle, there are 2π radians in a full revolution, and since the circumference of a circle is 2π times the radius, an arc equal to the radius subtends an angle of one radian at the center.
Last updated
About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
(1, 1, 1) . (2, 2, 2)
1st law of motion gives the definition of:
2nd law of motion measures which quantity?
7.0 kg bowling ball experience a net force of 5.0N. What will be its acceleration?
A 0.2 kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30m/s and rebounds up at 20m/s. The impulse on the ball during the collision is: