Assertion: There is not loss in energy in elastic collision.
Reason: Linear momentum is conserved in elastic collision.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reson are true but reason is not the correct explanation of assertion.
C. if assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

To solve the question regarding the assertion and reason about elastic collisions, let's break it down step by step:

### Step 1: Understand the Assertion
The assertion states that "There is no loss of energy in elastic collision."
- In an elastic collision, both kinetic energy and momentum are conserved. Therefore, the assertion is **true**.

### Step 2: Understand the Reason
The reason states that "Linear momentum is conserved in elastic collision."
- It is indeed true that linear momentum is conserved in elastic collisions. This is a fundamental principle of physics that applies to all types of collisions, elastic or inelastic.

### Step 3: Analyze the Relationship
Now we need to analyze whether the reason provided explains the assertion:
- The assertion talks about the conservation of energy, while the reason talks about the conservation of momentum. Although both statements are true, the reason does not directly explain why there is no loss of energy in elastic collisions.

### Step 4: Conclusion
Based on the analysis:
- The assertion is true.
- The reason is true, but it does not explain the assertion.

Thus, the correct answer is that both the assertion and reason are correct, but the reason does not explain the assertion.

### Final Answer:
**Option B**: Both assertion and reason are correct, but the reason does not explain the assertion.

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