Statement-1 : The flash of lightening is seen before the sound of thunder is heard
Statement-2 : The sound of thunder is produced after the flash of lightening.

Options

A. Statement-1 is true, Statement-2 is true , Statement-2 is correct explanation for Statement-11
B. Statement-1 is true,Statement-2 is true , Statement-2 is NOT a correct explanation for Statement-11
C. Statement-1 is true, Statement-2 is false
D. Statement-1 is false, Statement-2 is true

Answer

To analyze the given statements, we will break down the concepts of light and sound, their speeds, and the phenomena of lightning and thunder.

### Step-by-Step Solution:

1. **Understanding the Phenomena**:
- Lightning is a discharge of electricity that occurs during a thunderstorm. It produces a flash of light.
- Thunder is the sound produced by the rapid expansion of air surrounding the path of the lightning.

2. **Speed of Light vs. Speed of Sound**:
- The speed of light in a vacuum is approximately \(3 \times 10^8\) meters per second.
- The speed of sound in air is about \(3.4 \times 10^2\) meters per second (or roughly 343 meters per second at room temperature).
- Since the speed of light is significantly greater than the speed of sound, light from the lightning will reach an observer much faster than the sound of thunder.

3. **Analyzing Statement 1**:
- Statement 1 claims that "the flash of lightning is seen before the sound of thunder is heard."
- Given the speeds of light and sound, this statement is true. The flash of lightning will be observed first, followed by the sound of thunder.

4. **Analyzing Statement 2**:
- Statement 2 claims that "the sound of thunder is produced after the flash of lightning."
- This statement is misleading. While it is true that the sound of thunder reaches an observer after the light from the lightning, both the lightning and the thunder are produced simultaneously during the lightning strike. Therefore, this statement is false.

5. **Conclusion**:
- Based on the analysis:
- Statement 1 is true.
- Statement 2 is false.
- Therefore, the correct conclusion is that Statement 1 is true and Statement 2 is false.

### Final Answer:
- **Statement 1**: True
- **Statement 2**: False