Question

The dimensional formula for Young's modulus is:

• A. $[M{L}^{-1}{T}^{-2}]$
• B. $[M{L}^{0}L{T}^{-2}]$
• C. $[ML{T}^{-2}]$
• D. $[M{L}^2{T}^{-2}]$

Answer 1

Answer: (A)

The formula for the Young's modulus $Y=\frac{stress}{strain}$ Dimensions of $Y=\frac{M{L}^{-1}{T}^{-2}}{M^0{L}^0{T}^0}$ $=[M{L}^{-1}{T}^{-2}]$