Saved Bookmarks
| 1. |
Statement 1: Two spheres undergo a perfectly elastic collision. The kinetic energy of system of both spheres is always constant. [There is no external force on system of both spheres]. Statement 2: If net external force on a system is zero, the velocity of centre of mass remains constant.A. Statement `-1` is True, Statement `-2` is True, Statement`-2` is a correct explanation for Statement`-1`B. Statement `-1` is True,Statement`-2` is True, Statement`-2` is NOT a correct explanation for Statement`-1`C. Statement `-1` is True, Statement `-2` is FalseD. Statement `-1` is False, Statement `-2` is True. |
|
Answer» Correct Answer - D During collision `KE` of system is not constant , hence statement `-1 ` is false. |
|