The spherical shape of rain water droplet is due to

CONCEPT:

Spherical Shape of Rain Water Droplet

• The spherical shape of rain water droplets is primarily due to surface tension.
• Surface tension is a physical phenomenon where the surface of a liquid tends to contract and acquire the least surface area possible, leading to the formation of a spherical shape.

EXPLANATION:

• Surface tension acts at the interface between the water and air, pulling the molecules at the surface inward and minimizing the surface area.
• This inward force causes the droplet to adopt a shape with the smallest possible surface area, which is a sphere.
• Other forces such as gravity can distort this shape, but for small droplets, surface tension dominates and they remain nearly spherical.

Therefore, the correct answer is Surface tension.