Question

please write to answer.

Answer 1

they are used in:-

1
periscopes-A simple periscope is just a long tube with a mirror at each end. The mirrors are fitted into each end of the tube at an angle of exactly 45 degrees so that they face each other. The light then bounces down to the bottom mirror.
2
kaleidoscopes-a toy consisting of a tube containing mirrors and pieces of coloured glass or paper, whose reflections produce changing patterns when the tube is rotated.
3
car wing mirrors-to view the cars coming from behind
4

in microscopes
5
in signalling

Answer 2

Three uses of plane mirror are:
1.They are used in looking glasses.
2.They are used in solar cookers.
3.They are used to make Kaleidoscopes....
Hope it is helpful....