The dimensions of stress are

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(A) Stress is defined as the restoring force per unit area of the material. It is denoted by the Greek letter $\sigma$.$	ext{Stress} = \frac{	ext{Fo

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$[M L^{-1} T^{-2}]$

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(A) Stress is defined as the restoring force per unit area of the material. It is denoted by the Greek letter $\sigma$.$	ext{Stress} = \frac{	ext{Force}}{	ext{Area}}$Substituting the dimensional formulas for force and area:$	ext{Force} = [M L T^{-2}]$$	ext{Area} = [L^2]$$	ext{Stress} = \frac{[M L T^{-2}]}{[L^2]} = [M L^{1-2} T^{-2}] = [M L^{-1} T^{-2}]$

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