Question

state two difference between a convex lenses and concave lenses one use of convex lens and one use of concave lens

Answer 1

Hi baby

Here you answer...

Convex lenses are thicker at the middle. Rays of light that pass through the lens are brought closer together (they converge). A convex lens is a converging lens.

When parallel rays of light pass through a convex lens, the refracted rays converge at the focal point. The image formed is magnified (you can use this lens as a magnifier, or a simple camera lens by itself). It’s also called “positive” lens.

Concave lenses are thinner at the middle. Rays of light that pass through the lens are spread out (they diverge). A concave lens is a diverging lens.

When parallel rays of light pass through a concave lens the refracted rays diverge so that they appear to come from one point called the principal focus. The image formed is diminished. It’s also called “negative” lens. This lens can’t be used to form an image by itself, but in combination(s) with positive (converging) lenses it is used to shorten the focal length.

This is just a basic, simple answer to your question. There are many types or shapes of concave / convex lenses (including their combinations) and I could easily go on for a week about optics :-D

Answer 2

Difference between convex lens and concave lens are

(CONVEX LENS) :

1) convex lens is thicker in the middle and thinner at the edge

2) it is also called converging lens

3)positive focal length

4) it converges the incident ray

5) it can be used in camera, telescope etc

6) it also can be used in who have eye sight problem in hypermetropia

(CONCAVE LENS) :

1) concave lens thicker at the edge and in middle is thinner

2) it is also called diverging lens

3) negative focal length

4) it diverges the incident ray

5)it can be used in glasses and some telescope

6) it can be used in who have eye sight problem in myopia

Sorry, for the more points