Question

read the following question and state which type of mirror do you think is used in each case and why?
1.you must have seen mirror present in banks and atm centers in which an enlarged image is seen.
2.solar cooker coverts sunlight into heat with the help of mirror.the concentrated heat is then used as a heat source for cooking.
3.satellite dish is designed to receive and amplify weak signals send from communication satellites in space.the mirror is used in the dish to gather the weak signals over a large area and concentrate them on one spot.
4.you must have noticed a large mirror at blind driveways,turns and intersections or in parking garage entrances and exists.
5.a periscope is an optical device that is used for observing images which are beyond ones line of sight.it consist of a tube with mirrors at both ends set parallel to each other at exactly 45 degree.

Answer 1

1. concave mirror coz enlarged image is seen
2. concave mirror coz sunlight is concentrated at 1 pt
3. "
4.convex coz diminished n covers larger view
5. concave mirror coz. .... d case when light cms frm infinity