$540$ calories of heat converts $1$ cubic centimeter of water at $100\,^oC$ into $1671$ cubic centimeter of steam at $100\,^oC$ at a pressure of one atmosphere. Then the work done against the atmospheric pressure is nearly .......... $cal$
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If minimum possible work is done by a refrigerator in converting $100\; grams$ of water at $0^{\circ} C$ to ice, how much heat (in calories) is released to the surrounding at temperature $27^{\circ} C$ (Latent heat of ice $=80 Cal / gram$ ) to the nearest integer?
A given ideal gas with $\gamma = \frac{{{C_p}}}{{{C_v}}} = 1.5$ at a temperature $T$. If the gas is compressed adiabatically to one-fourth of its initial volume, the final temperature will be ..... $T$
If $\Delta Q$ and $\Delta W$ represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as
A given ideal gas with $\gamma = \frac{{{C_p}}}{{{C_v}}} = 1.5$ at a temperature $T$. If the gas is compressed adiabatically to one-fourth of its initial volume, the final temperature will be ..... $T$
A Carnot engine working between $300\,K$ and $600\,K$ has work output of $800\, J$ per cycle. What is amount of heat energy supplied to the engine from source per cycle...... $J/cycle$
A Carnot engine whose low temperature reservoir is at $7\,°C$ has an efficiency of $50\%$. It is desired to increase the efficiency to $70\%$. By how many degrees should the temperature of the high temperature reservoir be increased ....... $K$