Q 11-01-237NEETNEET 2022Top questionEasy
Plane angle and solid angle have
Answer: (B) Units but no dimensions
Plane angle $=\dfrac{\text{arc}}{\text{radius}}$ and solid angle $=\dfrac{\text{area}}{\text{radius}^2}$ are ratios of like quantities, so they are dimensionless.
They still have units: the radian (rad) and the steradian (sr).
Solution by Sreeraj P, M.Sc Physics