Assertion : Warming a room by a heat blower is an example of forced convection.
Reason : Natural convection takes place due to gravity.

Options

A. If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C. If Assertion is true, but the Reason is false.
D. If Assertion is false but the Reason is true.

Answer

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

### Step 1: Understand the Assertion
The assertion states that "Warming a room by a heat blower is an example of forced convection."
- **Explanation**: Forced convection occurs when a fluid (in this case, air) is forced to flow over a surface or through a space by an external force, such as a fan or a heat blower. The heat blower actively moves the air, distributing heat throughout the room.

### Step 2: Understand the Reason
The reason states that "Natural convection takes place due to gravity."
- **Explanation**: Natural convection occurs when fluid motion is caused by buoyancy differences due to temperature variations within the fluid. Hot air rises because it is less dense, and cold air sinks because it is denser. This process is driven by gravity, as the heavier cold air is pulled downwards.

### Step 3: Analyze the Relationship
Now we need to determine if the reason explains the assertion.
- The assertion is about forced convection, while the reason explains natural convection. Although both statements are true, they refer to different types of convection and do not directly explain one another.

### Conclusion
- Both the assertion and the reason are true statements.
- However, the reason does not serve as a correct explanation for the assertion.

### Final Answer
The correct answer is: Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

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