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English 25 Public

Quiz revision

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How are light rays drawn?

A straight line

What is the speed of light in air?

300 000 000 m/s

Glass is an example of which type of surface?

Opaque

Translucent

Transparent

Frosted glass (e.g., bathroom window) is an example of which type of surface?

Transparent

Translucent

Opaque

Wood is an example of which type of surface?

Transparent

Opaque

Translucent

What happens to light when it hits a transparent surface?

It passes straight through

What happens to light when it hits a rough surface?

Rays of light are scattered

What happens to light when it hits an smooth surface like mirror?

Light will be reflected

What is A?

Incident ray

What is B?

The normal

What is C?

Reflected ray

What is 'i'?

Angle of incidence

What is 'r'?

Angle of reflection

What happens to the speed of light when it goes from water to air?

it speeds up

What happens to the speed of light when it goes from a gas through a solid?

Denser medium, slows down, changes direction (refraction)

What is the relationship between angle of incidence and angle of refraction?

They are not equal, but when you increase angle of incidence, the light refracts more, so higher angle of refraction