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A Carnot engine work as refrigerator in ...

A Carnot engine work as refrigerator in between `0^(@)C` and `27^(@)C`. How much energy is needed to freeze `10 kg` ice at `0^(@)C`/

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Heat absorbed by sink
`Q_(2) =10 xx 10^(2) xx 80 =800k. Cal`
Now `(Q_(1))/(Q_(2))= (T_(1))/(T_(2)), Q_(1) = Q_(2) . (T_(1))/(T_(2))`
`therefore Q_(1) =800 xx (300)/(273) k. cal = 879 kcal`
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MOTION-HEAT-2 -EXERCISE-4 (LEVEL-II)
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  2. A cylinder of mass 1kg is given heat of 20,000J at atmospheric pressur...

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  3. Match the following for the given process :

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  4. A fixed thermally conducting cylinder has a radius R and height L0. Th...

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  5. A fixed thermally conducting cylinder has a radius R and height L0. Th...

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  6. A fixed thermally conducting cylinder has a radius R and height L0. Th...

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  7. Statement-1: The total translational kinetic energy of fall the molecu...

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  8. An ideal gas is expanding such that PT^(2)= constant. The coefficient ...

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  9. Column I contains a list of processes involving expansion of an ideal ...

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  10. Cv and Cp denote the molar specific heat capacities of a gas at consta...

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  11. The figure shows the P-V plot of an ideal gas taken through a cycle AB...

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  12. A real gas behaves like an ideal gas if its

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  13. One mole of an ideal gas in initial state A undergoes a cyclic process...

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  14. A diatomic ideal gas is compressed adiabatically to 1/32 of its initia...

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  15. 5.6 liter of helium gas at STP is adiabatically compressed to 0.7 lite...

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  16. One mole of a monatomic ideal gas is taken through a cycle ABCDA as s...

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  17. A mixture of 2 moles of helium gas ((atomic mass)=4a.m.u) and 1 mole o...

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  18. Two moles of ideal helium gas are in a rubber balloon at 30^@C. The ba...

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  19. Two non-reactive monoatomic ideal gases have their atomic masses in th...

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  20. One mole of a monatomic ideal gas is taken along two cyclic processes ...

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  21. In Fig., a container is shown to have a movable (without friction) pis...

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