A thunder tap is heard 5.5 s after the lightening flash. The distance of the flash is (velocity of sound in air is 330 m/s) :-

Options

A. 3560 m
B. 300 m
C. 1780 m
D. 1815 m

Explanation

To solve the problem, we need to find the distance of the lightning flash based on the time it takes for the sound of thunder to reach us and the speed of sound in air.

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Time taken for the sound to reach: \( t = 5.5 \) seconds
- Speed of sound in air: \( v = 330 \) m/s

2. **Use the Formula for Distance:**
The formula to calculate distance when speed and time are known is:
\[ \text{Distance} = \text{Speed} \times \text{Time} \]

3. **Substitute the Known Values:**
Substitute the values of speed and time into the formula:
\[ \text{Distance} = 330 \, \text{m/s} \times 5.5 \, \text{s} \]

4. **Calculate the Distance:**
Perform the multiplication:
\[ \text{Distance} = 330 \times 5.5 = 1815 \, \text{meters} \]

5. **Conclusion:**
The distance of the lightning flash is \( 1815 \) meters.

### Answer:
The distance of the flash is **1815 meters**.