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NEET PHYSICSEasy

Dimensions of stress are:

A

[ML2T−2][M L^2 T^{-2}]

B

[ML0T−2][M L^0 T^{-2}]

C

[ML−1T−2][M L^{-1} T^{-2}]

D

[MLT−2][M L T^{-2}]

Step-by-Step Solution

Stress is defined as the restoring force per unit area. Stress=ForceArea\text{Stress} = \frac{\text{Force}}{\text{Area}} Dimensional formula of force =[MLT−2]= [M L T^{-2}] Dimensional formula of area =[L2]= [L^2] Therefore, the dimensional formula of stress =[MLT−2][L2]=[ML−1T−2]= \frac{[M L T^{-2}]}{[L^2]} = [M L^{-1} T^{-2}].

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