What is the relationship between the angle of incidence and angle of reflection?
They should be equal to each other.
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Why might the angle of incidence and angle of reflection be equal?
The ray of light may not have been at the meeting point of the mirror & normal. Lines thickness. Innaccurate measuring.
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What type of surface would you find diffuse scattering?
Rough/bumpy surfaces--> distorted image
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What type of surface would you find specular reflection?
Flat surfaces--> perfect images.
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Why can you see a perfect image of yourself in the mirror?
All the light is reflected in a straight line rather being bounced all over the place.
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What is refraction?
Where light changes direction.
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Why does light change direction when changing medium?
When they hit a new medium, the waves change speed. This is because mediums have different densities.
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Can light bend?
No!
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If the light goes from a less dense to a more dense medium, what happens?
The ray of light moves towards the nomal line.
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If the light goes from a more dense to a less dense medium, what happens?
The ray of light moves away from the normal line.
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What is the relationship between the angle of incidence and angle of refraction?
As the angle of incidence increases, so does the angle of refraction, however the angle of refraction is always less than the angle of incidence.
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How do you find the refractive index?
sin i / sin r
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How do you find the critical angle?
sinC = 1/refractive index
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What is the critical angle?
Angle of incidence.
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If you are at the critical angle...
The angle of refraction is 90℃.
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If you are above the critical angle...
This is total internal reflection.
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If you are below the critical angle...
There will be an angle of refraction.
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What is total internal reflection?
When all the light stays in the medium. The angle of incidence is bigger than the critical angle.
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What is the doppler effect?
As the sound moves closer towards you, the wavefronts compress, which means smaller wavelengths but the same wavespeed. Frequency increases, resulting in a higher pitch.
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Other cards in this set
Card 2
Front
Why might the angle of incidence and angle of reflection be equal?
Back
The ray of light may not have been at the meeting point of the mirror & normal. Lines thickness. Innaccurate measuring.
Card 3
Front
What type of surface would you find diffuse scattering?
Back
Card 4
Front
What type of surface would you find specular reflection?
Back
Card 5
Front
Why can you see a perfect image of yourself in the mirror?
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