Question

Distinguish between primary and secondary rainbow

Answer 1

rainbow in which the effective rays are refracted on entering each drop, reflected from its interior surface, and refracted again on emerging to pass to the observer's eye and in which the red is seen on the outside edge of the bow is called as primary rainbow

A secondary rainbow appears outside of a primary rainbow and develops when light entering a raindrop undergoes two internal reflections instead of just one (as is the case with a primary rainbow). ... This is why the colors of a secondary rainbow change from violet on the top to red on the bottom is called as secondary rainbow

Answer 2

Answer:

The primary rainbow is the brightest band of colours.

The secondary rainbow is the dimmer band of colours.

Explanation:

The primary rainbow is the brightest band of colours. It is caused by sunlight reflecting once off the inner back of the raindrops. The secondary rainbow is the dimmer band of colours. It is caused by sunlight reflecting twice off the inner back of the raindrops.