At constant volume temperature is increased then (a) collision on walls will be less (b) number of collisions per unit time will increase (c) collisions will be in straight lines (d) collisions will not change

Answer: (b). At constant volume the number density is fixed, but raising T raises molecular speed ( v ∝ √(T)). Faster molecules hit each other and the walls more often per second. So the answer is (b) number of collisions per unit time will increase.

At constant volume temperature is increased then | NEET 1989 (AIPMT)

Q26NEET 1989 · AIPMTEasy

Mean Free Path & Real Gases

At constant volume temperature is increased then

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Answer: (b)

At constant volume the number density is fixed, but raising $T$ raises molecular speed ( $v \propto \sqrt{T}$ ).
Faster molecules hit each other and the walls more often per second.
So the answer is (b) number of collisions per unit time will increase.

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