| List I | List II | ||
| A. B. C. D. | Linear momentum Angular momentum Kinetic energy Total energy | 1. 2. 3. 4. 5. | Elastic collision Inelastic collision No external force No external torque All physical processes |
A) A-3 B-4 C-1 C-5
B) A-4 B-3 C-1 C-5
C) A-5 B-4 C-2 C-1
D) A-5 B-3 C-4 C-1
Correct Answer: A
Solution :
(i) The collision is said to be elastic when the kinetic energy is conserved. (ii) Linear momentum is conserved in all types of collision (iii) Angular momentum of a system remain constant if resultant torque acting on it is equal to zero. As \[L=I\omega ,\]so if \[\vec{\tau }=0\]then \[I\omega =cons\tan t\] (iv) In all physical process the total energy is conserved. So, option is correct.
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