Question

Why do you think air is transparent?

• A. Air reflects all the light that falls on it.
• B. Air traps all the light that falls on it.
• C. Air allows all the light that falls on it to pass through.
• D. Some constituents of air absorb light rays that fall on them.

Answer 1

The correct option is C Air allows all the light that falls on it to pass through.

We can see any object around us because light reflected from an object can move through space and reach our eyes. Once light reaches our eyes, signals are sent to our brain and our brain deciphers the information in order to detect the appearance, location, and movement of the objects we are looking at. Since air is made up of gases which allow all the light that falls on them to pass through them, we do not receive any reflected rays from the air and hence we are unable to see air.
Air allows all the light that fall on it to pass through it, is the correct reason for air to be not visible to us.