The double convex lens/mirror is symmetrical across both its horizontal and vertical axis. Each of the lens's two faces can be thought of as originally being part of a sphere. The fact that a double ...

Let us find out what are mirror and lenses, phenomena’s associated with them, applications, convex lens, concave lens, convex mirror, concave mirror in the form of MCQs.

The human eye is the natural convex lens that refracts light. So, it is important to know the defects of vision and which type of lens can cure which defect. World Sight Day is observed on the ...