Question

The quantities which have the same dimensions as those of solid angle are: 

(1) strain and angle 

(2) stress and angle 

(3) strain and arc 

(4) angular speed and stress

Answer 1

Correct option is : (1) strain and angle 

Solid angle \((\Omega)\) = \(\frac{A}{r^2}\)

It is dimensionless quantity 

So from options

Option (1) Strain & Angle both are dimensionless