Section B: Give a short answer to the question given below.
How does a glass prism turn a narrow beam of white sunlight into a spectrum of colours?
You will find a .
The prism has probably .
Observe the colours that appear at the two extremes of the colour band.
What is the sequence of colours that you observe on the screen?
Answer variants:
RIBGYOV
VIBGYOR
GIBVYOR
ROYGBIV