In the experiment ‘To trace the path of ray of light passing through a glass prism’.

i) What is the correct set-up?

ii) Justify for your correct set-up.

i. The correct set-up for the experiment is as shown in the diagram. The points E, F mark the position of the allpins.

ii.

The justification is that the pins should be around 5- 10 cm. apart and the incident angles chosen should be common values so as to make the calculations easy.