Lakhmir Singh and Manjit Kaur Solutions for Chapter: Reflection of Light, Exercise 2: Short Answer Type Questions

What type of reflection of light takes place from a cardboard.

What type of reflection of light takes place from still water surface of a lake.

What can you see in a completely dark room? If you switch on an electric bulb in this dark room as a light source, explain how you could now see the electric bulb.

What can you see in a completely dark room? If you switch on an electric bulb in this dark room as a light source, explain how you could now see a piece of white paper.

A boy with a mouth $5 \mathrm{cm}$ wide stands $2 \mathrm{m}$ away from a plane mirror. Where is his image and how wide is the image of his mouth?
 

A boy with a mouth $5 \mathrm{cm}$ wide stands $2 \mathrm{m}$ away from a plane mirror. The boy walks towards the mirror at a speed of $1 \mathrm{m} {\mathrm{s}}^{-1}$. At what speed does his image approach him? 

An extended object in the form of an arrow pointing upward has been placed in front of a plane mirror. Draw a labelled ray-diagram to show the formation of its image.

State the uses of plane mirrors.