What are the laws of thermodynamics in simple words with examples?

Explanation:

1) Law of Conservation of Energy:

Energy can neither be created nor destroyed. Turning on a light would seem to produce energy; however, it is electrical energy that is converted.

2) The entropy of any isolated system always increases:

A simple way to think of the second law of thermodynamics is that a room, if not cleaned and tidied, will invariably become more messy and disorderly with time – regardless of how careful one is to keep it clean. When the room is cleaned, its entropy decreases, but the effort to clean it has resulted in an increase in entropy outside the room that exceeds the entropy lost.

3)entropy of a system approaches a constant value as the temperature approaches absolute zero:

vapours of water are the gaseous forms of water at high temperature. The molecules within the steam move randomly. Therefore, it has high entropy.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.