total internal refraction. explain 10th class
Answers
Answered by
0
Answer:
Refraction-
The change in direction of light when it passes from one medium to another medium is called refraction of light.
The refraction takes place at the boundary of two media.
Causes of Refraction-
The speed of light is different in two mediums. The refraction of light is due to the change in speed of light on going from one medium to another.
Greater the difference between speed the more is the refraction.
Effects of Refraction of Light-
(i) a stick (or pencil) held obliquely and partly immersed in water appears to be bent at the water surface.
(ii) an object placed under water appears to be raised.
(ii) a pool of water appears to be less deep than it actually is.
(iv) when a thick glass slab is placed over some printed matter, the letters appear raised when viewed from the top.
(v) a lemon kept in water in a glass tumbler appears to be bigger than its actual size, when viewed from the sides.
(vi) the stars appear to twinkle on a clear night.
Similar questions