One radian is equal to______________?
Correct answer: B. 57.3°
- A. 67.3°
- B. 57.3°
- C. 87.3°
- D. 60°
Explanation
One radian is the angle subtended when the arc length equals the radius, and its degree measure is 180°/π = 57.3°. Therefore, 1 radian is approximately 57.3°. The likely mistake is choosing 60° by using a rough, nonstandard approximation instead of 180°/π.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Angular Displacement
Angular displacement measures the change in a body’s angular position and is expressed in radians or degrees, with anticlockwise and clockwise directions assigned signs. It connects to arc length, angular velocity and angular acceleration, and must be distinguished from ordinary linear displacement in rotational motion.
Practise Rotational and Circular Motion
521 free Rotational and Circular 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 Angular Displacement questions
The circumference subtends an angle________________?
If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?
When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?
Steradian is the SI unit of________________?
An arc of length equal to the circumference of a circle subtends an angle
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is \( R \), the total angular displacement covered is