When light paases through the rain drops it forms rainbow.
similarly Fog(at the morning) is also made of water droplets then when light passes through Fog why does it scaters,it should also form rainbow right?

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Solution

Rainbow is form when total internal reflection occur in water droplet.
Fog is formed by moisture in which water droplet are of very smaller size. To form rainbow there must be some minimum size of water droplet , which exist in water droplet of rain and not in fog. Therefore rainbow form during rain and not in fog.

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When light paases through the rain drops it forms rainbow. similarly Fog(at the morning) is also made of water droplets then when light passes through Fog why does it scaters,it should also form rainbow right?

When light paases through the rain drops it forms rainbow.
similarly Fog(at the morning) is also made of water droplets then when light passes through Fog why does it scaters,it should also form rainbow right?