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प्रश्न
Give the expression for volume thermal expansion.
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उत्तर
Volume Expansion: For a small change in temperature ∆T the fractional change in volume `((Δ"V")/("V"_0))` of a substance is directly proportional to ∆T.
`(Δ"V")/"V"_0 = α_"V"Δ"T"`
Therefore, `α_"V" = (Δ"V")/("V"_0Δ"T")`
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