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  4. The dimensional formula for Youngs modulus is:

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Q. The dimensional formula for Youngs modulus is:

JIPMERJIPMER 2005Physical World, Units and Measurements

Solution:

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