A balloon filled with helium $\left(32^{\circ} C \right.$ and $1.7\; atm$.) bursts. Immediately afterwards the expansion of helium can be considered as
JEE MAIN 2020, Medium
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Bursting of helium balloon is irreversible $\&$ adiabatic.
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$Q$ amount of heat is given to $0.5\ mole$ of an ide al mono-atomic gas by a process $TV^n$ constant. Following graph shows variation of temperature with $Q$ . Find value of $n$.
When an ideal triatomic non-linear gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is
A refrigerator works between $4^o C$ and $30^o C.$ It is required to remove $600$ calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is ....... $W$ (Take $1\, cal \,=\, 4.2\, Joules\,)$
A Carnot engine, whose efficiency is $40\%$, takes in heat from a source maintained at a temperature of $500\ K$. It is desired to have an engine of efficiency $60\%$. Then, the intake temperature for the same exhaust (sink) temperature must be ....... $K$
A Container having $1$ mole of a gas at a temperature $27°C$ has a movable piston which maintains at constant pressure in container of $1 \,atm.$ The gas is compressed until temperature becomes $127°C$. The work done is ........ $J$ ($C_P$ for gas is $7.03\, cal/mol-K)$
When heat energy of $1500\; Joules$, is supplied to a gas at constant pressure $2.1 \times {10^5}\;N/{m^2}$, there was an increase in its volume equal to $2.5 \times {10^{ - 3}}\;{m^3}$. The increase in internal energy of the gas in Joules is ...... $J$