The dimensional formula for the modulus of rigidity is

Options

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

Answer

D

Explanation

Modulus of rigidity `=("Shear stress")/("Shear strain")=[ML^(-1) T^(-2)]`
So, `[ML^(-1)T^(-2)]` is dimension formula for modulus of rigidity.