Topic: Refraction of Light.
Why does a pencil look bent in water?
Wow.
That was a very cool magic trick.
Now check this out.
Hey.
Stop crying.
Your magic wand is not bent or broken.
Look.
It is safe.
But do you know why your magic wand appeared bent in water?
It is because of refraction of light.
Refraction of light is the change in direction of light when it passes from one medium to another obliquely.
So, what do you think are the two media here?
You don't know.
No worries.
I will tell you.
They are air and water.
When the light rays coming from the tip of the magic wand pass from water to air.
They change their direction, that is, they get refracted.
When these refracted rays reach our eyes, our eyes trace them backward as straight lines.
Due to this, the rays appear to come from a point slightly above the original position.
Hence, the magic wand appears to be bent in water.
Similarly, like the magic wand, a pencil appears to be bent in water.