Answer #1
convex lens is something they put in your eyes as contacts or in your glasses if you farsited but convex lens makes your image bigger and concave lens makes your image smaller.
Answer #2
For example, mirrors can be convex, concave and straight, just like glass. The normal mirrors that you use to look at yourself are straight mirrors, they show a normal picture.
Do you ever walk into a shop and see a huge bulging mirror in the corner of the shop and you can see just about every corner of the shop in the mirror? well that is a convex mirror. The curved mirrors show a wider view of everything.
The concave mirrors are opposite, they "magnify" the image, the concave mirrors make objects larger because the light is focused on a smaller reflection area.
This is exactly what happens if you look through glass, that is either a convex or concave.
People who are short sighted have glasses with a concavelens, (the lens that indents, you can also remember that it is concave that way because a cave goes in and a concave lens goes in.
People who are long sighted wear glasses with convexlenses.
Convex lens converges the light and a concave lens diverges the light..
A concave lens is a lens in which the ends are thicker than the middle, rather shaped like this ---> )( A convex lens is a lens in which the ends are thinner than the middle, shaped like the following ---> ()
Convex lens give a virtual & diminished image while concave lens give inverted virtual in rare case & magnified image.
The difference between concave and convex is that convex lenses are the type of lens that make images bigger, while concave make images smaller. Still confused, maybe this will help. When you think of concave think of a cave, how you can see a small image at the end of the cave, while convex is the opposite.
The convex lens bulges out at the center, while the concave lens bulges in at the center. The convex lens magnifies, while the concave lens reduces.
convex lens
Concave lens caves in )( like that and Convex lens bulges out () like that
Concave lenses are thicker at the edges then at the middle. A Convex lens is a lens that is thicker in the center than at its edges.
A convex lens is thicker in the center than at the edges. A convex lens is like a concave mirror.A concave lens is thinner in the center than at the edges.
A concave lens helps you see far if you're nearsighted and convex lenses help you see near if you're farsighted.
the image formed by convex lens will converge at a point, while with a concave lens it will appear to diverge from a point.
)( is a concave lens() is a convex lens