MHT CET 2022 Physics question

According to kinetic theory of gases, when two molecules of a gas collide with each other then

(A)kinetic energy is conserved but momentum is not conserved
(B)momentum is conserved but kinetic energy is not conserved
(C)neither kinetic energy nor momentum is conserved
(D)both momentum and kinetic energy are conservedCorrect

Answer: (D)

Solution

One of the assumptions of the kinetic theory is that collisions between molecules (and with the walls) are perfectly elastic. In an elastic collision the total kinetic energy is conserved, and as no external force acts during the collision, the total

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Question ID VK-095740