Question

A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in below Figure. In which of the following diagrams, after dispersion, the third colour from the top of the spectrum corresponds to the colour of the sky?

1. 
2. 
3. 
4. 

Options

• i

• ii

• iii

• iv

Answer 1

ii