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Assertion: Metal rods connected to earth...

Assertion: Metal rods connected to earth are fixed at the top of a building to protect building against lightning.
Reason: Metal has one character to repel away the approaching charge of any polarity. These metal rods repel the lightning to fall somewhere else.

A

If both assertion and reason are correct and reason is a correct explanation of the assertion .

B

If both assertion and reason are correct but reason is not the correct explanation of assertion

C

If assertion is correct but reason is incorrect

D

If assertion is incorrect but reason is correct.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that metal rods connected to the earth are fixed at the top of a building to protect it against lightning. This is true because metal rods, known as lightning rods, provide a path for the electrical discharge from lightning to travel safely into the ground, preventing damage to the building. **Hint:** Think about how lightning interacts with conductive materials and the purpose of grounding. ### Step 2: Understand the Reason The reason claims that metal has the ability to repel approaching charges of any polarity and that these rods repel lightning to fall somewhere else. This statement is incorrect. Metals do not repel charges; rather, they can conduct electricity and allow charges to flow through them. **Hint:** Consider the properties of metals and how they behave in the presence of electric fields. ### Step 3: Analyze the Relationship The assertion is correct because the purpose of the metal rods is indeed to protect buildings from lightning by providing a safe pathway for the electrical charge to reach the ground. However, the reason is incorrect because it misrepresents the behavior of metals in relation to electric charges. **Hint:** Reflect on the role of lightning rods and how they function in terms of charge movement. ### Step 4: Conclusion Based on the analysis, we conclude that the assertion is true while the reason is false. Therefore, the correct answer is that the assertion is correct, but the reason is not. **Final Answer:** Assertion is true; Reason is false.
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