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Question:

Pick the wrong answer in the context with rainbow. A) When the light rays undergo two internal reflections in a water drop, a secondary rainbow is formed. B) An observer can see a rainbow when his front is towards the sun. C) Rainbow is a combined effect of dispersion, refraction and reflection of sunlight. D) The order of colours is reversed in the secondary rainbow.

When the light rays undergo two internal reflections in a water drop, a secondary rainbow is formed

An observer can see a rainbow when his front is towards the sun

Rainbow is a combined effect of dispersion refraction and reflection of sunlight

The order of colours is reversed in the secondary rainbow

Solution:

Correct option is B. An observer can see a rainbow when his front is towards the sun. Rainbow can't be observed when the observer faces towards the sun. As Rainbow is a combined effect of dispersion, refraction and reflection of sunlight.