What is a lens? Distinguish between a convex lens and concave lens. Which of the two is a converging lens : convex lens of concave lens?

Open in App

Solution

A lens is an optical device that transmits and refracts a ray of light, and converges or diverges a beam of light.

Convex Lens Concave Lens

1.A convex lens converges or concentrates the light rays to a point.

2.A convex lens has a real focus.

3.A convex lens has a positive focal length. 1. A concave lens diverges the rays passing through it.

2.A concave lens has a virtual focus.
3.A concave lens has a negative focal length.

A convex lens is a converging lens .

Suggest Corrections

Similar questions

Which lens is converging: (i) an equiconcave lens or an equiconvex lens? (ii) a concavo-convex lens or a convexo-concave lens?

Join BYJU'S Learning Program

Convex Lens	Concave Lens
1.A convex lens converges or concentrates the light rays to a point. 2.A convex lens has a real focus. 3.A convex lens has a positive focal length.	1. A concave lens diverges the rays passing through it. 2.A concave lens has a virtual focus. 3.A concave lens has a negative focal length.