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JEE Main levelSingle correct optionDifficulty 2 of 3ig178

If the pressure of an ideal gas is doubled at constant volume, the average kinetic energy of its molecules

Adoubles
Bbecomes four times
Cremains unchanged
Dhalves

Answer: A

At constant

V

and

n

,

P \propto T

, so doubling

P

doubles

T

. Average kinetic energy

= \frac{3}{2} k_{B} T

therefore doubles.

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