Topic 5

Question 1

What happens in light refraction

Answer 1

When entering a denser material it bends towards the normal

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

Question 2

What happens in glass to air refraction

Answer 2

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

Question 3

What do all colours together make?

Answer 3

White light

Question 4

What is each colour

Answer 4

A different wavelength in visible light

Question 5

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

Answer 5

Only the cour red is reflected

All other colours are absorbed

Question 6

How to craw a converging lense diagram

Answer 6

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

Question 7

How to draw the divergejng lense

Answer 7

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