Assertion: A boiled egg can be easily distinguished from a raw unboiled egg by spinning.
Reason: The hard boiled egg has a moment of inertia which is more than that of the raw egg.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason 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.

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that a boiled egg can be easily distinguished from a raw unboiled egg by spinning.

- When you spin a boiled egg, it behaves as a solid object because the contents are solidified and move together with the shell.
- In contrast, when you spin a raw egg, the liquid inside does not spin immediately with the shell due to inertia. The liquid takes time to start moving, which causes the raw egg to wobble and come to rest quickly.

### Step 2: Analyze the Reason
The reason given is that the hard-boiled egg has a moment of inertia which is more than that of the raw egg.

- Moment of inertia (I) depends on how mass is distributed relative to the axis of rotation. For a raw egg, the mass (liquid) is concentrated towards the center, but it can shift and does not contribute effectively to the rotational motion until it starts moving.
- In a boiled egg, the mass is distributed throughout the volume and is rigid, which means it has a lower moment of inertia compared to the raw egg.

### Step 3: Conclusion
- The assertion is **true** because you can distinguish between the two eggs by spinning them.
- The reason is **false** because the moment of inertia of the raw egg is greater than that of the boiled egg.

### Final Answer
The assertion is true, but the reason is false.