Assertion: Not net charge can stay in volume of metallic object when the same is in electrostatic condition. Net charge of metallic object appears on its outer surface.
Reason: When a metallic object attains electrostatic condition then electric field intensity becomes zero everywhere inside the volume of the metallic object.

Options

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.

Answer

To analyze the given assertion and reason, we can break down the problem step by step.

### Step 1: Understanding the Assertion
The assertion states that "No net charge can stay in the volume of a metallic object when it is in electrostatic condition. The net charge of a metallic object appears on its outer surface."

**Explanation**: In electrostatic equilibrium, charges within a conductor redistribute themselves. Any excess charge will move until it reaches the surface of the conductor. Therefore, the assertion is correct.

### Step 2: Understanding the Reason
The reason states that "When a metallic object attains electrostatic condition, then electric field intensity becomes zero everywhere inside the volume of the metallic object."

**Explanation**: According to electrostatics, when a conductor reaches electrostatic equilibrium, the electric field inside the conductor becomes zero. This is because any electric field would cause the free charges in the conductor to move, contradicting the condition of electrostatic equilibrium. Hence, the reason is also correct.

### Step 3: Linking Assertion and Reason
Now, we need to determine if the reason correctly explains the assertion.

**Explanation**: The reason provided explains why the assertion is true. Since the electric field inside the conductor is zero, it implies that there can be no net charge within the volume of the conductor. Thus, the charges must reside on the outer surface.

### Conclusion
Both the assertion and the reason are correct, and the reason correctly explains the assertion.

### Final Answer
Both the assertion and reason are correct, and the reason is the correct explanation for the assertion.

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