Question

Directions: Some questions (Assertion – Reason type) are given below. Each question contains statement I (Assertion) and statement II (Reason). Each question has 4 choices (a), (b), (c) and (d) out of which only one is correct. So, select the correct choice.

Statement I In an inelastic collision of two balls a part of kinetic energy is lost and appears as deformation potential energy of balls.

Statement II In an inelastic collision the value of e is lying between 0 and 1

• A. Statement I is true, statement II is true, statement II is a correct explanation for statement I
• B. Statement I is true, statement II is true, statement II is not a correct explanation for statement I
• C. Statement I is true, statement II is false
• D. Statement I is false, statement II is true

Answer 1

The correct option is B

Statement I is true, statement II is true, statement II is not a correct explanation for statement I

Assertion:

1. A collision in which kinetic energy is lost is known as an inelastic collision. In an inelastic collision, the system's momentum is preserved, but the kinetic energy is not.
2. This is due to the transfer of some kinetic energy to something else.
3. Hence statement I is true

Reason:

1. For a perfectly elastic collision, $e=1$
2. For perfect inelastic collision, $e=0$.
3. Generally, the value of e lies between 0 and 1
4. Thus statement II is true but not a correct explanation for the statement I

Therefore, Statement I is true, statement II is true, and statement II is not a correct explanation for the statement I.

Hence option (b) is the correct answer