Question

In the primary rainbow, what is the order in which colours are observed?

• A. Violet innermost and red outermost
• B. Red innermost and violet outermost
• C. Violet, blue, red, yellow
• D. Haphazard

Answer 1

The correct option is A Violet innermost and red outermost

In primary rainbow violet appears as innermost layer, while red appears as the outermost layer. The colours are in the order of violet, indigo, blue, green, yellow, orange and red (VIBGYOR). Since violet colour has the smallest wave length, in the primary rainbow, it suffers maximum refraction. That is why it appears on the innermost position.