The dimensional formula of the modulus of rigidity is

Options

A. `[ML^(-1) T^(-1) ]`
B. `[ML^(-3) T^(-2) ]`
C. `[ML^(2) T^(-2) ]`
D. `[ ML^(-1) T^(-2) ]`

Answer

D

Explanation

`Q = ("Shearing stress")/("Shearing strain")= (f)/( A theta) = ([MLT^(-2) ])/([L^(2)]) = [ML^(-1) T^(-2) ]`