Topic 5 Flashcards

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1
Q

What happens in light refraction

A

When entering a denser material it bends towards the normal

When entering a less dense material it bends away from the normal

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2
Q

What happens in glass to air refraction

A

If angle is less than critical angle it refracts away from the normal

If angle is more than critical angle it bends towards the normal

If angle is equal to critical angle it passes along the boundary

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3
Q

What do all colours together make?

A

White light

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4
Q

What is each colour

A

A different wavelength in visible light

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5
Q

What colour is a red apple and why does it look like that

A

Only the cour red is reflected

All other colours are absorbed

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6
Q

How to craw a converging lense diagram

A

Arrow straight forward
Arrow goes until a certain point then goes through the 1st focal point

Another arrow going through the centre of the diagram

Where they meet is called the image

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7
Q

How to draw the divergejng lense

A

First arrow going through centre of diagram

Second arrow going straight until reaches a point

From First focal point before the line draw the line

This is a virtual image

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