Questions

If speed V, area A and force F are chosen as fundamental units, then the dimension of Young’s modulus will be:

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FA−1V0

FA2V−2

FA2V−3

FA2V−1

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detailed solution

Correct option is A

Using formulae for longitudinal stress,FA=YΔll, As stress is dimensionless, ⇒Y=F.A−1

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