These question consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five responses.
Assertion: Gravity plays very important role inthe process of natural convection.
Reason: Convection mainly takes place in liquids and gases.

Options

A. If both Assertion and Reason are correct and Reason is also a good absorber of radiation at a given wavelength.
B. If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
C. If Assertion is true but Reason is false
D. If Assertion is false but Reason is true.

Explanation

To solve the question, we need to analyze both the Assertion and the Reason provided.

### Step 1: Analyze the Assertion
The assertion states, "Gravity plays a very important role in the process of natural convection."

- **Explanation**: Natural convection occurs when a fluid (liquid or gas) is heated, causing the warmer, less dense portions to rise while the cooler, denser portions sink. This process is heavily influenced by gravity, as it is the force that causes the denser, cooler fluid to sink and the lighter, warmer fluid to rise. Therefore, the assertion is **correct**.

### Step 2: Analyze the Reason
The reason states, "Convection mainly takes place in liquids and gases."

- **Explanation**: Convection is indeed a process that primarily occurs in fluids, which include both liquids and gases. This is because the particles in these states of matter can move freely, allowing for the transfer of heat through the movement of the fluid. Thus, this reason is also **correct**.

### Step 3: Determine the Relationship
Now we need to determine whether the reason correctly explains the assertion.

- The assertion is about the role of gravity in natural convection, while the reason discusses where convection occurs (in liquids and gases). Although both statements are true, the reason does not explain why gravity is important in the process of natural convection. Therefore, while both the assertion and reason are correct, the reason does not support the assertion.

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

Thus, the correct response to the question is **Option 2**: Both the assertion and reason are correct, but the reason does not explain the assertion.

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