Statement -1 : The sensitvity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil.
Statement - 2: Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized.

Options

A. Statement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
B. Statement 1 is true, Statement 2 is true, Statement 2 is NOT a correct explanation for Statement 1.
C. Statement 1 is true, Statement 2 is false.
D. Statement 1 is false, Statement 2 is true.

Explanation

To analyze the statements provided in the question, we will evaluate each statement independently and then determine the relationship between them.

### Step 1: Evaluate Statement 1
**Statement 1:** The sensitivity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil.

- A moving coil galvanometer operates on the principle of electromagnetic induction. The sensitivity of the galvanometer refers to its ability to detect small currents.
- When a suitable magnetic material, such as soft iron, is placed inside the coil, it enhances the magnetic field produced by the coil.
- This enhancement leads to an increase in the torque acting on the coil for a given current, which in turn increases the sensitivity of the galvanometer.

**Conclusion for Statement 1:** True.

### Step 2: Evaluate Statement 2
**Statement 2:** Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized.

- Soft iron is known for its high magnetic permeability, which means it can easily become magnetized in the presence of a magnetic field.
- One of the key characteristics of soft iron is that it can be magnetized and demagnetized easily, making it suitable for applications like transformers and galvanometers.
- The statement incorrectly asserts that soft iron cannot be easily magnetized or demagnetized, which is false.

**Conclusion for Statement 2:** False.

### Step 3: Determine the Relationship Between the Statements
- Statement 1 is true, and Statement 2 is false.
- Since Statement 2 does not correctly explain Statement 1 (in fact, it contradicts the properties of soft iron), we conclude that Statement 2 is not a valid explanation for Statement 1.

### Final Conclusion
- **Statement 1 is true.**
- **Statement 2 is false.**
- Therefore, the answer is that Statement 1 is true and Statement 2 is false.