A sealed container with a negligible linear coefficient of thermal expansion contains Helium. When heated from 300 K to 600 K, the average kinetic energy of Helium atom is
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a
halved
b
left unchanged
c
doubled
d
increased by a factor of 2
answer is C.
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Detailed Solution
The average kinetic energy per molecule of a gas is 32kT α TIf temperature is doubled then average kinetic energy also doubles