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A material has poisons ratio 0.2. If a uniform rod of it suffers a longitudinal strain of $5 \times 10^{- 2}$ , then the percentage increase in its volume is

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detailed solution

Correct option is D

ΔVV×100=(1−2σ)Δℓℓ×100 =(1−2×0.2)(5×10−2×100) =0.6×5 = 3%

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A material has poisons ratio 0.2. If a uniform rod of it suffers a longitudinal strain of 5×10−2 , then the percentage increase in its volume is

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A material has poisons ratio 0.2. If a uniform rod of it suffers a longitudinal strain of $5 \times 10^{- 2}$ , then the percentage increase in its volume is