# How do you derive the thin lens equation?

## How do you derive the thin lens equation?

The thin lens equation quickly provides the relation between di, do, and the focal length f. It can be derived from a geometric analysis of ray tracing for thin lenses and is given by 1do+1di=1f 1 d o + 1 d i = 1 f . The magnification m of an image is the ratio between the image and object height (hi/ho).

### WHAT IS lens formula equation?

What is the Lens Formula? Answer: According to the convex lens equation, the lens formula is 1/f = 1/v + 1/u. It relates the focal length of a lens with the distance of an object which is placed in front of it and the image formed of that object.

#### What is the formula for mirror?

Let’s explore the mirror formula (1/f = 1/v+1/u) and see how to locate images without drawing any ray diagrams.

Who gave Lens formula?

Let’s see how to use lens formula (1/v-1/u= 1/f) to locate images without having to draw ray diagrams. Created by Mahesh Shenoy.

What is a thin lens equation?

1 s + 1 s ‘ = 1 f {\\displaystyle {1 \\over s}+{1 \\over s’}={1 \\over f}} , which is known as the thin lens equation.

## What is the formula for the power of a lens?

Lenses have a ‘power’. This is the curvature which the lens adds to the wavefront . Power is measured in dioptres, D, and is given by the formula: P = 1 f {\\displaystyle P={\\frac {1}{f}}} , where f equals the focal length of the lens, in meters.

### What is a lens equation?

lens equation. [′lenz i‚kwā·zhən] (optics) Any equation which relates the distance of a point object from some well-defined reference point in an optical system to the distance of its image from a similar point.

#### What is a thin lens?

In optics, a thin lens is a lens with a thickness (distance along the optical axis between the two surfaces of the lens) that is negligible compared to the radii of curvature of the lens surfaces. 13/11/2019