Refraction of Light through a Prism
Dispersion of light can be defined as the separation of white light beam into its seven constituent colors.
As light rays travel from air into a glass prism, they deviate away from the normal.
- Refracting edge
- Refracting angle
- Principal section
- None of these
Light rays get refracted ______ when they pass from air to glass prism.
towards the normal
along the normal
along the air-glass interface
away from the normal
Explain the refraction of light through a triangular glass prism using a labelled ray diagram. Hence define the angle of deviation.
State whether the following statement is 'true' or 'false' :
The deviation produced by a prism is independent of the angle of incidence and is the same for all colours of light.
What is a prism? With the help of a diagram of a principal section of a prism, indicate its refracting surfaces, refracting angle and base.
A light ray of yellow color is incident on an equilateral glass prism at an angle of incidence equal to 48∘ and suffers minimum deviation by an angle of 36∘. (i) What will be the angle of emergence? (ii) If the angle of incidence is changed to (a) 30∘, (b) 60∘, state in each case whether the angle of deviation will be equal to, less than or more than 36∘?