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Question
Assertion :On heating a sample of gas collision frequency increases. Reason: Heat is produced by the collision of gas molecules against each other.
Assertion :On heating a sample of gas collision frequency increases. Reason: Heat is produced by the collision of gas molecules against each other.
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Solution
The correct option is D Assertion is incorrect but Reason is correct
On heating a sample of gas mean speed of molecules increases and because of this collision frequency increases.
Also,
Collisions are perfectly elastic(An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is equal to their total kinetic energy before the encounter. Elastic collisions occur only if there is no net conversion of kinetic energy into other forms.), however kinetic energy of molecule changes but average kinetic energy remains unchanged. In case of elastic collisions there is no heat loss.
Hence, the assertion is true but the reason is false.
On heating a sample of gas mean speed of molecules increases and because of this collision frequency increases.
Also,
Collisions are perfectly elastic(An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is equal to their total kinetic energy before the encounter. Elastic collisions occur only if there is no net conversion of kinetic energy into other forms.), however kinetic energy of molecule changes but average kinetic energy remains unchanged. In case of elastic collisions there is no heat loss.
Hence, the assertion is true but the reason is false.
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