Physics - Geometrical Optics Question with Solution | TestHub

Sunlight is refracted and dispersed on entering the drop

It is reflected inside and refracted again on leaving

Printed key: (B) and (D)

Total internal reflection (C) is not involved: the ray enters the drop from air, so its incidence at the inner surface is at or below the critical angle and the internal reflection is partial, not total.

An ordinary rainbow involves refraction, dispersion and (partial) internal reflection - hence (B) and (D).