CP5A Core Practical - Investigating refraction

Question 1

Outline the basic steps of practical

Answer 1

1) Draw around the block on paper and then remove block and draw a line normal

2) Draw three guide lines of incident at different angles

3) Place block on page and shine light along chosen line

4) Mark incoming outgoing rays of light

5) Turn lights on and measure angles of reflection and refraction

Question 2

What are precautions to stay safe about the light box

Answer 2

Don’t touch any metal parts as they will be very hot

Switch off when not in use

Question 3

What is the normal

Answer 3

Any line perpendicular to the surface of the mirror

Question 4

What is the angle of incidence

Answer 4

The angle between the incident ray and the normal