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Questions and Answers
What is the term used to describe the bending of a light wave as it travels from one medium to another?
What is the term used to describe the bending of a light wave as it travels from one medium to another?
Refraction
At what speed does light travel in a vacuum?
At what speed does light travel in a vacuum?
3×10⁸ m/s
What is the separation represented by X and Y in the context of Air and Water?
What is the separation represented by X and Y in the context of Air and Water?
Separation between Air and Water
What is the direction of the incident ray without refraction represented by?
What is the direction of the incident ray without refraction represented by?
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What imaginary line is drawn at point Q to represent the normal?
What imaginary line is drawn at point Q to represent the normal?
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Study Notes
Refraction of Light
- In a vacuum, light of different wavelengths travels at the same speed, approximately 3×10⁸ m/s.
- In different mediums, light of different wavelengths travels at different speeds.
- Refraction is the bending of a light wave as it travels from one medium to another.
- An incident ray is a light ray that approaches a medium at a certain point, called the point of incidence.
Refraction at a Boundary
- When a light wave travels from one medium to another, it bends at the boundary between the two mediums.
- The boundary between two mediums can be represented by a line, such as the line between air and water (X and Y).
- An imaginary line, called the normal, can be drawn at the point of incidence, perpendicular to the boundary (MN).
- Without refraction, the direction of the incident ray would be QS.
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Description
Learn about the refraction of light as it travels from one medium to another. Understand how light of different wavelengths travels with the same speed in a vacuum but with different speeds in different mediums. Explore the concept of refraction and its practical applications.
