Question

Which physical phenomenon causes the spherical shape of raindrops?

Answer 1

Answer:

Raindrops take up the spherical shape due to the surface tension of water which is caused due to the tendency of water molecules to stick together

Answer 2

Raindrops are the cause of Rainbows. Light from the sun passes through the "front" of the raindrop. It hits the "back" of the raindrop which, because raindrops are spherical, acts like a curved mirror. At different points along this curve, the "beam" of incoming light is bent at slightly different angles depending on where it hits.