Exercise

The phenomenon due to which a ray of light, travelling from one optical medium to another optical medium, bounces off from its surface with the change of angle, is called reflection of light. A ray of light which travels from an optical medium towards a mirror is called incident ray. A ray of light which bounces off the mirror surface, into the same optical medium in which the incident ray was travelling, is called reflected ray. Which one of the diagrams below correctly shows the path of the reflected ray?

Aanad and his friends went for a field trip. While travelling on the road they noticed many traffic signals. They tried deciphering the meaning of each signal. Some time later, they came across the following sign:

Which phenomenon of light is illustrated by the pair of boards shown here?

Veena observes the time in the clock shown in picture, through a mirror and thinks it is $9:40$. Her, sister Regha told that she is wrong. What would be the actual time? 

Shown in picture is the flag of a country.

Blue, Green and Red are primary colours and Yellow is a secondary colour.

If the above flag is seen through a red filter, it will look like

Why is an image formed only by a polished surface?

Why do rear view mirrors carry the warning 'objects seen in the mirror may be closer than they appear'?

 Is there any difference between the image formed by a small plane mirror and a large plane mirror? 

Funny mirrors can make your face look short, long, fat or distorted. What causes the images of these funny mirrors to be distorted?