Dimensional formula $M L^{- 1} T^{- 2}$ doesnot represent the physical quantity

Young's modulus of elasticity

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Stress

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Strain

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Pressure

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Solution

The correct option is C Strain
Strain is defined as ratio of change in length to original length
So, Strain has no units.
Stress, pressure , Youngs modulus have same units $kg m^{- 1} s^{- 2}$ and dimensions $M L^{- 1} T^{- 2}$

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