What is Lens
A lens is a transparent optical device that refracts or bends light rays when passes through it. It causes them to converge or diverge, and thus, forming images.
Types of lens
There are two major types of lens, concave lens and convex lens.
Concave Lens
- It has refracting surface curved inwards.
- They are thinner in middle and thicker at the top and bottom.
- It produces smaller images.
- They can diverge a parallel beam of light.
Convex Lens
- It has outward curve refracting surface.
- It produces enlarged image.
- They are converging in nature.
- They are thicker in middle and thinner at top and bottom
Ray Optics – Definition, Formula, Applications
Ray Optics is the study of properties of light and optical instruments by assuming that light travels in a straight line. It is also known as geometrical optics, which deals with the geometry of light. Light always travels in a straight line, and the direction in which the light rays propagate is called the ray of light. It studies the principles and laws governing the propagation of light, particularly in the absence of wave effects such as interference and diffraction.
In this article, we will learn about ray optics, reflection, refraction, concave and convex mirrors, lenses, and formulas related to them.