Why concave lens is known as converging lens?
Because a convex lens concentrates the light rays that are incident on it, it is called a converging lens. … The ray through the optical center emerges un-deviated along its original direction. The distance from the optical center to the focal point is called the focal length of the lens.
Which lens is called converging lens and why?
A convex lens is called as converging lens because it bends inward the light falling on it.
What is concave lens also called?
A concave lens is also known as a diverging lens because it is shaped round inwards at the centre and bulges outwards through the edges, making the light diverge.
What is the difference between concave and convex lens?
A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centre. Due to the converging rays, it is called a converging lens.
Which lens is known as diverging lens?
The concave lens is a diverging lens, because it causes the light rays to bend away (diverge) from its axis.
What is the magnification produced by a concave lens?
The image formed by a concave lens is always smaller than the object, therefore, the magnification produced by a concave lens is always less than 1.
What are the difference between converging and diverging lenses?
A converging lens is said to have positive focal length. A converging lens causes exiting rays to be more convergent coming out than they were entering the lens. A diverging lens is said to have negative focal length. … A ray along this axis passes through the lenses without any change of direction due to refraction.