Question

Give reasons;
a.Plane mirrors are used as looking glass.
b.plane mirrors are used in box type solar cookers.

Answer 1

Answer:

a. plane mirror are used as looking glasses because the image formed by plane mirror is real and inverted.

Answer 2

Answer:

1) looking glasses are plane mirrors because the image formed by a plane mirror is always erect and of same size as that of object

2) a concave mirror is used in solar cookers because it converges light rays comming from infinity to a point so that more heat is produced at the point sufficient to cook the food