OnlineCBT
Physics · WORK, ENERGY AND POWER
हिन्दीConsider the following statements regarding collisions and energy: (A) In every collision, the total linear momentum of an isolated system is strictly conserved at each instant. (B) In an inelastic collision, total mechanical energy is conserved during the deformation phase. (C) In a completely inelastic collision between two bodies, the maximum possible kinetic energy is lost. (D) Power delivered by a force is a scalar quantity with dimensions \( [\text{M}\text{L}^2\text{T}^{-3}] \). How many of the above statements are correct?
Correct answer · Option 3
Only three
Explanation
Statements (A), (C), and (D) are correct. Statement (B) is false because in an inelastic collision kinetic energy is transformed into heat/deformation and mechanical energy is not conserved. Hence, exactly three statements are correct.
