Which of the following quantities is dimension less?
Answer & explanation
Correct answer: option 4
The power of lens is dimensionally represented as $[M^0 L^{-1} T^0].$
The dimensional formula of Planck's constant h is$ [ML^2T^{-1}].$
The gravitational constant is dimensionally represented as $[M^{-1} L^3 T^{-2}].$