A) Youngs modulus
B) stress
C) pressure
D) all of these
Correct Answer: D
Solution :
The dimensional formula of Youngs modulus \[Y=\frac{F/A}{\Delta l/l}=\frac{[M{{L}^{-2}}]}{[{{L}^{2}}]}=[M{{L}^{-1}}{{T}^{-2}}]\] The dimensional formula of stress \[=\frac{F}{A}=\frac{[M{{L}^{-2}}]}{[{{L}^{2}}]}=[M{{L}^{-1}}{{T}^{-2}}]\] Hence, all of these are represented by \[[M{{L}^{-1}}{{T}^{-2}}]\].
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