NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Center of Mass, Momentum and Collision
NEET · Physics · Center of Mass, Momentum and Collision
Assertion (A): In inelastic collision, a part of kinetic energy...
Assertion (A): In inelastic collision, a part of kinetic energy convert into heat energy, sound energy and light energy etc.
Reason (R): The force of interaction in an inelastic collision is non-conservative in nature.
Options
- AAssertion (A) is True, Reason (R) is True; Reason (R) is a correct explanation for Assertion (A)
- BAssertion (A) is True, Reason (R) is True; Reason (R) is not a correct explanation for Assertion (A)
- CAssertion (A) is True, Reason (R) is False.
- DAssertion (A) is False, Reason (R) is True.
Correct answer
B. Assertion (A) is True, Reason (R) is True; Reason (R) is not a correct explanation for Assertion (A)
Step-by-step solution
- Assertion (A) is True. In an inelastic collision, total momentum is conserved but total kinetic energy of the system decreases because some of it is transformed into other forms (heat, sound, internal energy due to deformation).
- Reason (R) is True. The contact/deformation forces during an inelastic collision include non-conservative components (e.g., frictional and internal dissipative forces), so mechanical energy is not conserved.
- However, R is not the correct explanation for A in the strict assertion-reason sense: A states what happens to kinetic energy; R states a property of the forces but does not explicitly link how this causes the conversion into heat/sound/etc. Hence it's true but not a direct explanatory statement for A .
Correct option: (2) Assertion (A) is True, Reason (R) is True; Reason (R) is not a correct explanation for Assertion (A).