Which of the following is the physical quantity for the expression arc/radius?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Plane angle.
- A plane angle is an angle at the intersection of two straight lines or two planes. It has two dimensions.
- Radian is the SI unit of plane angle, and it is denoted as 'rad'.
- The space between these lines in the plane defined by them is the plane angle.
- It is measured in radians (2π radians in a circle) or degrees (360 degrees to a circle).