Physics-SI Units
NEET Physics SI Units MCQ Question
Type: MCQ-diagram based-Hard-Class 11
A diagram shows a circle with a central point O, an arc of length ds, and a radius r. Which of the following correctly labels the unit for the plane angle dq described in the diagram?
A
radian
B
steradian
C
degree
D
gradian
Correct Answer
Option A
Detailed Explanation
The unit for a plane angle, defined as the ratio of the length of arc to the radius, is radian (rad) according to the NCERT. Steradian (sr) is for solid angles.
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