Question

1. Light - Reflection and Refraction​

Answer 1

Answer:

Reflection involves a change in direction of waves when they bounce off a barrier.

Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

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Answer 2

Reflection

• reflection is the bouncing back of light from a surface.
• the law of reflection states that the incident ray, the reflected ray and the normal to the surface of the mirror all lie on the same plane
• the angle of reflection is equal to the angle of incidence

Refraction

• Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media.
• The laws of refraction as follows:
• 1. The incident ray, the refracted ray and the normal to the surface at the point of incidence all lie in one plane.
• 2. Snell's law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

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