(A): The typres of aircrafts are slightly conducting.
(R ): If a conductor is connected to ground, the extra charge induced on conductor will flow to ground.

Options

A. Both .A. and .R. are true and .R. is the correct explanation of .A.
B. Both .A. and .R. are tru and .R. is not the correct explanation of .A.
C. A. is true and .R. is false
D. A. is false and .R. is true

Answer

To solve the question, we need to analyze the assertion (A) and the reason (R) given in the problem:

### Step 1: Understand Assertion (A)
The assertion states that "The types of aircraft are slightly conducting." This implies that the materials used in the construction of aircraft, particularly the tires, have some level of conductivity.

**Hint:** Consider the materials used in aircraft tires and their properties.

### Step 2: Understand Reason (R)
The reason states that "If a conductor is connected to ground, the extra charge induced on the conductor will flow to ground." This is a fundamental property of conductors. When a conductor is grounded, any excess charge on it will indeed flow to the ground, neutralizing the charge.

**Hint:** Recall the principle of grounding and how it affects charge distribution in conductors.

### Step 3: Analyze the Relationship Between A and R
Now, we need to determine if the reason (R) correctly explains the assertion (A). While both statements are true, the reason does not specifically explain why aircraft tires are slightly conducting. The assertion is about the conductivity of the tires, while the reason discusses the grounding effect on conductors.

**Hint:** Think about whether the reason directly supports the assertion or if they are related but separate concepts.

### Step 4: Conclusion
From the analysis, we conclude that both the assertion (A) and the reason (R) are true, but the reason does not correctly explain the assertion. Therefore, the correct answer is that both statements are true, but R is not the correct explanation of A.

### Final Answer:
- Both A and R are true, but R is not the correct explanation of A.