The density of water at 20°C is 998 kgm − 3 and at 4 0 ∘ C , it is 992 kgm − 3 . The coefficient of cubical (volume) expansion of water is nearest to

ρ 20 V 20 = ρ 40 V 40 γ ≈ 40 − 20 998/992 − 1 γ ≈ 3.02 × 1 0 − 4 ∘ C − 1

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The density of water at 20°C is $998 kgm^{- 3}$ and at $4 0^{\circ} C$ , it is $992 kgm^{- 3}$ . The coefficient of cubical (volume) expansion of water is nearest to

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Answer:

Solution:

$ρ_{20} V_{20} = ρ_{40} V_{40}$
$γ \approx \frac{998/992 - 1}{40 - 20}$
$γ \approx 3.02 \times 1 0^{- 4}^{\circ} C^{- 1}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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