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QJEEM23Ph0e00: JEE Main 2023 Physics - Class 11 JEEM23Ph0e00 Solution: For three low density gases A, B, C pressure versus temperature …

For three low density gases A, B, C pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure.

JEE Main 2023 (Online) 1st February Evening Shift Physics - Heat and Thermodynamics Question 124 English

The temperature corresponding to the point ' K\mathrm{K} ' is :

Multiple Choice Options

  • A −273∘C-273^{\circ} \mathrm{C}
  • B −373∘C-373^{\circ} \mathrm{C}
  • C −100∘C-100^{\circ} \mathrm{C}
  • D −40∘C-40^{\circ} \mathrm{C}

Step-by-Step Verified Solution

In thermodynamics, the pressure-temperature graph for an ideal gas kept at constant volume (isochoric process) is a straight line. This is because for an ideal gas, the pressure is proportional to the temperature (as described by the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature).

It is clear from graph that for all the gases lines of graphs meet at same value.

At x\mathrm{x} -axis (temperature axis) P\mathrm{P} is zero but temperature is negative and it will be equal to 0 K or −273∘C-273^{\circ} \mathrm{C} .

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