Question

The following diagrams show the splitting up of a composite light into its constituent colours.

Which among the above figures is correct?

• A. (i)
• B. (ii)
• C. (iii)
• D. both (iii) and (i)

Answer 1

The correct option is A

(i)

Seven colours constitute visible spectrum of light i.e. VIBGYOR with red at the higher end of wavelengths and violet at the lower end of the wavelengths. The colour with the shorter wavelength is more deviated as its refractive index is high than that with a longer wavelength. Red colour has larger wavelength compared to the violet colour. So, violet colour is deviated more compared to red colour. Hence, figure (i) is correct.