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A flask of volume 10^3 cc is completely ...

A flask of volume `10^3` cc is completely filled with mercury at `0^@C` The coefficient of cubical expansion of mercury is `180xx10^(-6)//^(@)C` and heat of glass is `40xx10^(-6)//^(@)C`. If the flask in now placed in boiling water at `100^@C` how much mercury will overflow?

A

7 cc

B

14 cc

C

21 cc

D

28cc

Text Solution

Verified by Experts

The correct Answer is:
D

Increse in volume of flask
`=40xx10^-6xx10^3xx10^2=4cc`
Increase in volume of mercury
`=180xx10^-6xx10^3xx10^2=18cc`
Volume of mercury overflow
`=18-4=14 c c`
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