Assertion:Horizontal component of eath's magnetic field (H) has been chosen as a magnetic element instead of the vertical component (V).
Reason: Most of our experiments are performed in horizontal configuration. So, H is more relevant.

Options

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

Answer

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

**Step 1: Understand the Assertion**
The assertion states that the horizontal component of Earth's magnetic field (H) has been chosen as a magnetic element instead of the vertical component (V).

**Step 2: Understand the Reason**
The reason given is that most experiments are performed in a horizontal configuration, making H more relevant.

**Step 3: Analyze the Relevance of the Horizontal Component**
In many practical applications and experiments, especially in physics, the horizontal component of the magnetic field is often more significant because it aligns with the plane of the experiments. For instance, many experiments are conducted on the Earth's surface, where the horizontal component (H) is more easily measurable and applicable.

**Step 4: Evaluate the Assertion and Reason Together**
Both the assertion and reason are true. The reason provides a valid explanation for why the horizontal component (H) is chosen over the vertical component (V).

**Step 5: Conclusion**
Since both the assertion and reason are true, and the reason correctly explains the assertion, we conclude that the assertion is true, the reason is true, and the reason is the correct explanation for the assertion.

**Final Answer:**
Both the assertion and reason are true, and the reason is the correct explanation for the assertion.

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