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NEET
Exam
NEET
Subject
Physics
Chapter
Center of Mass, Momentum and Collision

NEET · Physics · Center of Mass, Momentum and Collision

Assertion (A): In an elastic collision between two bodies, the...

Assertion (A): In an elastic collision between two bodies, the energy of each body is conserved. Reason (R): The total energy of an isolated system is conserved.

Options

  1. AAssertion (A) is True, Reason (R) is True; Reason (R) is a correct explanation for Assertion (A)
  2. BAssertion (A) is True, Reason (R) is True; Reason (R) is not a correct explanation for Assertion (A)
  3. CAssertion (A) is True, Reason (R) is False.
  4. DAssertion (A) is False, Reason (R) is True.

Correct answer

A. Assertion (A) is True, Reason (R) is True; Reason (R) is a correct explanation for Assertion (A)

Step-by-step solution

- Assertion (A) is False. In an elastic collision, what is conserved is the total kinetic energy of the system and total momentum. The kinetic energy and momentum of each individual body generally change due to exchange during collision; they are not conserved body-by-body. - Reason (R) is True. For an isolated system, total energy (including kinetic, potential, internal, etc.) is conserved. Therefore, the correct option is (4): Assertion (A) is False, Reason (R) is True.
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