A black body is at temperature $827^\circ\text{C}$. The rate at which it emits energy is proportional to

If the two temperatures on Fahrenheit scale differ by $54^\circ\text{F}$, then the difference in temperature on the Celsius scale is

A gas at normal temperature is suddenly compressed to one-fourth of its original volume. If $\gamma = 1.5$, then the increase in the temperature of the gas in Kelvin is ($\gamma$ is the ratio of specific heats)

The thermodynamic process in which no work is done by the gas or on the gas is