Question

What is difference between primary rainbow and secondary rainbow ?

Answer 1

arainbow 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 but a secondary rainbow is a faint rainbow formed by light rays that undergo two internal reflections in drops of rain, appearing above the primary rainbow and having its colors in the opposite order.

Answer 2

$\Large\underline\mathfrak{Question}$

What is rainbow? How it is formed?

a) Primary rainbow

b) Secondary rainbow.

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$\Large\bold\star\underline{\underline\textbf{Rainbow\:}}$

Rainbow

→ After rain, when sunlight falls on water drops, concentric coloured arcs are seen in atmosphere. These coloured arcs are called rainbow. It is observed when back of the observer is towards the sun.

Cause

→ Rainbow is formed due to dispersion and total internal reflection of sunlight by water droplets.

Types of rainbow

→ Sometimes two rainbows are seen. The inner rainbow is called primary and outer rainbow is called secondary rainbow.

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$\Large\bold\star\underline{\underline\textbf{Primary Rainbow\:}}$

→ It is formed due to two refractions and one total internal reflection of sunlight by water droplets.

→ In this rainbow red colour is on outer side and violet colour is on inner side of rainbow.

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$\Large\bold\star\underline{\underline\textbf{Secondary Rainbow\:}}$

→ It is formed due to two refractions and two total internal reflections.

→ In this rainbow red colour is on inner side and violet colour is on outer side of rainbow.

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→ An attachment is also provided with the answer to make it clear for you.

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Hope it helped u.

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