Some IGCSE light questions with clues

2. This is about lateral inversion.
• Where does the image appear to come from?
• Extend the rays from the point of intersection
and where does do they originate from?
• What do you notice about the distance of the
object and the image?

3. Image of girl
You must draw out a
diagram!
To start with the girl is 5 metres away from the mirror
– how far away is she from from her image?

4. Draw the
normal for
this ray!
How many
degrees are
there in a
triangle?

5. Angle of i = angle of r You must draw out a
60º 60º diagram!
Work out this angle beacuse you
know how many degrees are in a triangle,
draw the normal at 90º and….
45º
?º

6. What is the angle of reflection?
Where is the angle of reflection?

8. Is this a trick question? Where is the normal?

9. Dispersion

10. Total
internal
reflection
Where is the
normal?
Think about
the critical
angle?