1. Tardigrade
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  3. Physics
  4. A glass flask of volume 1000 cm3 is completely filled with mercury at 0° C. The co-efficient of cubical expansion of mercury is 180 × 10-6/ ° C and that of glass is 30×10-6 /° C. If the flask is now placed in boiling water at 100 ° C, how much mercury will over flow ?

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Q. A glass flask of volume $1000\,cm^3$ is completely filled with mercury at $0^\circ C$. The co-efficient of cubical expansion of mercury is $180 \times 10^{-6}$$/ ^\circ C $and that of glass is $ 30\times10^{-6} /^\circ C$. If the flask is now placed in boiling water at $100\,{}^\circ$ C, how much mercury will over flow ?

Thermal Properties of Matter

Solution:

$\gamma_a=\gamma_r-\gamma_{g}=(180-30)\times10^{-6}=150\times{10^{-5}}/^\circ C$
$\Delta V=V_0\gamma\Delta\,t=1000\times150\times10^{-5}\times100$