mirrors. q what is a mirror? a: a polished surface which reflects an image is a mirror

Mirrors

Q What is a mirror?A: A polished surface which reflects an image is a mirror.

Q What are mirrors made up of?A: Mirrors are made up of a flat piece of glass, which has thin coat of silver behind. It is

very shiny, so light bounces off this very well.

Q 19 Name types of mirrors.

A: 1) Plane mirror = the flat mirror which we use to see our image.

2) Concave mirror = Mirror which is curved inwards, like cave. (Example; inside of spoon).

3) Convex mirror = Mirror which is curved outside, like the outside of a dome. ( Example; outside of spoon).

Q What are the uses of plane mirror?A: 1) to see our images. 2) Mirror writing like ambulance is written in mirror writing, so

others can see the reflection in their mirror.

Q What are the uses of convex mirrors?A: Convex mirrors are used as car door mirrors. Things look far away and smaller in

convex mirrors.

Q What are the uses of concave mirrors?A: Concave mirrors are used for makeup. Objects look bigger in concave mirrors.

Q How do we represent reflection and scattered light?A: We use arrows to show reflection and scattered light.

Q Why are the words ‘Police‘ and ‘Ambulance’ painted back – to – front on police vehicles and ambulances?A: Everything seems to be reverse in mirrors. So the words like police and ambulance are painted back-to-

front so that the person in other vehicles can read the proper words in their back view mirrors.

Q What is reflection?A: Polished, smooth or shiny surfaces bounces light rays in the same direction. That’s why we see an image in a mirror. We see the Moon because it reflects the light from the Sun.

Q What are uses of reflection?A: 1) In toys like periscope. 2) Reflective materials help us to be seen at night, keeping

us safe. 3) Lighthouse sends warning signals by reflecting a bright light.

Q What is refraction?A: Light bends as it moves from one type of material to another. For example a pencil in

water appears as if it is broken.

Q What is absorption?A: The process by which light is absorbed is called absorption. Black color absorbs most

of light that hit them. They reflect less light.

Q What is scattered light?A: When light hits rough surfaces like wood, stone, paper or wool it will bounce off

them in all directions. We say that light has been scattered.