Q.

The dimensional formula for Young’s modulus is

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a

ML−1T−2

b

M0LT−2

c

MLT−2

d

ML2T−2

answer is A.

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Detailed Solution

Young’s modulus = StressStrainStress = ForceArea      ⇒  σ = MLT−2L2 = ML−1T−2Strain  =  Change  in  lengthOriginal  lengthHence strain is dimensionlessHence, Y = ML−1T−2
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The dimensional formula for Young’s modulus is