Which of the following pairs does not have similar dimensions?

Options

A. Stress and pressure
B. Tension and surface tension
C. Plank 's constant and angular momentum
D. Angle and strain

Answer

B

Explanation

Dimensional formula of surfece tension
surface area `= ("force")/("Langth") = ([MLT^(-2)])/([L]) = [MT^(-2)]`
Dimensional formula of tension `= [MLT^(-2)]`
Hence, dimensions of surface tension and tension are not equal.
Dimensional formula of stress and pressure is `[ML^(-1)T^(-2)]`.
Dimensional formula of Plank's constant and angular momentum is `[ML^(2)T^(-1)]`.
Also dimensional formula of angle and strain is same.