Assertion (A): Magnetic poles cannot be separated by breaking a bar magnet into two pieces.
Reason (R): When a magnet is broken into two pieces, the magnetic moment will be reduced to half.

Options

A. Both A and Rare Tuę and R is the correct explanation of A
B. Both A and R are true but R is NOT the correct explanation of A
C. A is true but R is false
D. A is false and R is true

Explanation

To analyze the given question, we need to evaluate both the assertion (A) and the reason (R) separately.

### Step 1: Understand the Assertion (A)
The assertion states that "Magnetic poles cannot be separated by breaking a bar magnet into two pieces."

- When a bar magnet is broken, each piece will become a new magnet with its own north and south poles. Therefore, even after breaking, each piece will still have both a north and a south pole. This means that the assertion is **true**.

### Step 2: Understand the Reason (R)
The reason states that "When a magnet is broken into two pieces, the magnetic moment will be reduced to half."

- The magnetic moment of a magnet is a measure of its strength and orientation in a magnetic field. When a bar magnet is broken into two equal halves, each half will have its own magnetic moment, which is equal to half of the original magnet's magnetic moment. Therefore, this statement is also **true**.

### Step 3: Evaluate 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 explain why magnetic poles cannot be separated. The assertion is about the nature of magnetic poles, while the reason discusses the magnetic moment. Thus, the reason is not a correct explanation for the assertion.

### Conclusion
- The assertion (A) is true.
- The reason (R) is true, but it does not explain the assertion.

### Final Answer
- Assertion (A) is true.
- Reason (R) is true, but it is not a correct explanation for assertion (A).