Can you see the flame of the candle through that bent pipe? Why does it happen so?
Important Questions on Physical Environment
In the picture, does the light from the flame of the candle fail to reach your eyes?
Why does light fail to reach your eyes? Is there any obstacle on the path of light? Why does light get obstructed?
What is the difference between the paths of light in the two cases?
Place a table near a wall, and put a burning candle on it. Now take a piece of cardboard. Make a small hole in the middle of it with the help of a small narrow nail. Switch off the light to make the room dark. Hold the cardboard in between the candle and the wall in such a way that the hole in the board and the flame of the candle lie on the same straight line.
Now, look at the wall before you. What do you observe? How does the inverted optical impression of the flame form on the wall?
What do you see on the wall? Where does the light on the wall come from?
