a) Choose the correct statement with respect to Refraction of light 1. The colour always changes when light enters from one optical medium to another. 2. Absorption of light when it strikes the surface of a medium is refraction. 3. Speed of light changes when it enters from one optical medium to another of different optical density. 4. Speed of light does not change when it enters from one optical medium to another of different optical density.
Answers
Answer:
3 speed of light changes when it enters from one optical medium to another of different optical density
Explanation:
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The correct statement is 3. Speed of light changes when it enters from one optical medium to another of different optical density.
Explanation:
Refraction is a particle property of light. It is the phenomenon that explains bending of light when it travels from one medium to another.
- The colour always changes when light enters from one optical medium to another.
The colour of light never changes when going from one medium to another. Colour depends on frequency or wavelength of light and it does not change while propagation of light from one medium to another.
- Absorption of light when it strikes the surface of a medium is refraction.
Refraction is not the absorption of light, it is the bending of light ray due to decrease or increase in velocity of light.
- Speed of light changes when it enters from one optical medium to another of different optical density.
Speed of light changes when it travels from one medium to another. When travelling from denser to rarer medium, speed of light increases and when travelling when rarer to denser, speed of light decreases.