WELCOME

Presented bySuchithra.V.G

B.Ed,Physical scienceGCTE

REFRACTION

Why the spoon is bent?

Where is the correct position of the fish

Refraction When a ray of

light passes obliquely from one medium to another, it undergoes a deviation at the surface of separation of the two media

Optical density

The velocity of light will be higher in a medium of low optical density and vice versa

Ascending order of optical density

air < water < glass < diamond

Characteristics of refraction

No deviation takes place when the ray of light passes normally from one medium to another

When a ray of light passes obliquely from an optically rarer medium to a denser medium, it deviates towards the normal

When a ray of light passes obliquely from an optically denser medium to a rarer one, it deviates away from the normal

Now think! The spoon seems to be

bent due to refraction It is due to refraction we

see the fish just above the real position

Are you correct?

Do you think that you are seeing the sun rise and sun set at the correct time when sun rises and sets?

Who pour water on road?

The mirache we see on road in sunny days is caused by refraction!

THANK YOU