.difference between concave lences and convex lences
Answers
Answer:
A Concave lens is thinner in the middle and thicker at the edge. A convex lens bends light rays toward each other when the light passes through the lens. A concave lens spreads out light rays when light passes through the lens. They cannot form an image on a screen.
Answer:
The lens which is thinner at the edge and
think in the middle portion is called convex lens.
The parallel rays passing though convex lens converge (meets) at a single point. that is why convex lens is called converging lens.
The incident rays parallel to Principal axis gets focused at a point on principal axis after refraction from convex lens. The point is called (F) the focal point of convex lens.
The lens which is thicker at the edge and thinner at the middle portion is called concave lens.
It spreads the incident rays (diverge it).
That's why concave lens is called diverging lens.
Incident rays parallel to the principal axis appear to diverge from a point on principal axis after passing though the concave lens . This point is called focal point (F) of concave lens.
some definitions related to lens
principal axis the line passing through the centers of Curvature is called principal axis.