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 (figure 2.21) In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky ?
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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 the figure. In which of the following cases, after dispersion, the third colour from the rop corresponds to the colour of the sky ?

The base of an equilateral triangle ABC is BC. When it is arranged in four different situations and white light is incident on it, then in which of the following arrangements of the prism, the third colour from the top is the colour of clear sky in dispersion of light is produced ?

Draw a ray diagram showing the dispersion through a prism when a narrow beam of white light is incident on one of its refracting surface. Also indicate the order of the colours of the spectrum obtained.

Draw a ray diagram showing the dispersion through a prism when a narrow beam of white light is incident on one of its refracting surface. Also indicate the order of the colours of the spectrum obtained.

Which of the following colours deviates most when white light is refracted by a prism?

Which of the following colour of white light is least deviated by the prism ?

Why do we get different colours in the phenomenon of dispersion of white light through prism?