MCQ
Figure shows a siphon. Choose the wrong statement : ( $P_0 =$ atmospheric pressure)


- ASiphon works when $h_3 > 0$
- BPressure at point $2$ is ${P_2} = {P_0} - \rho g{h_3}$
- CPressure at point $3$ is $P_0$
- ✓Pressure at point $1$ is $P_0$

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Statement $-1$ : No change in the temperature of the gas takes place when ideal gas expands in vacuum. However, the temperature of real gas goes down (cooling) when it expands in vacuum
Statement $-2$ : The internal energy of an ideal gas is only kinetic. The internal energy of a real gas is kinetic as well as potential