Refraction (Grade 11 NSC Matric Physical Sciences): Flashcards
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What is refraction?
What is refraction?
Bending of light when travelling from one medium to another
Formula for refractive index
Formula for refractive index
Speed of light in vacuum ()
Speed of light in vacuum ()
m⋅s⁻¹
Why are all refractive indices greater than 1?
Why are all refractive indices greater than 1?
Light travels slower in any material than in a vacuum
What is optical density?
What is optical density?
Measure of how well a medium can refract (bend) light
What is the normal in a ray diagram?
What is the normal in a ray diagram?
Line perpendicular to surface at boundary point
What is the angle of incidence?
What is the angle of incidence?
Angle between incident ray and the normal
Light moving from low to high bends which way?
Light moving from low to high bends which way?
Towards the normal
Light moving from high to low bends which way?
Light moving from high to low bends which way?
Away from the normal
What property of light stays constant during refraction?
What property of light stays constant during refraction?
Frequency