# Question: What Is A Lens Formula?

## Who gave Lens formula?

Mahesh ShenoyLet’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 difference between mirror and lens?

The core differences between the mirror and lens would be due to its construction and working. The mirror is the apparatus which reflects the light falling on them. Whereas, lenses are the ones that manipulate the light. The mirror is having one side reflective coating and on the other hand.

## What is the formula of convex lens?

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

## Which lens has positive magnification?

Magnification of Convex Lens: A magnification of 2 indicates the image is twice the size of the object and a magnification of 1 indicates an image size being the same as the object size. If the magnification is positive, then the image is upright compared to the object (virtual image).

## What is the use of lens formula?

The lens formula is applicable to both types of lenses – convex and concave. It can also be used to calculate image distance for both real and virtual images. If the equation provides a negative image distance, then the image formed is virtual and on the same side as the object.

## WHAT IS lens formula and magnification?

Magnification of a lens is defined as the ratio of the height of an image to the height of an object. It is also given in terms of image distance and object distance. It is equal to the ratio of image distance to that of object distance. m = \frac{h_i}{h_o} = \frac{v}{u} Where, m= magnification.

## What is V and U in light?

Where v is the image distance and u is the object distance. Hence, the expression for magnification (m) becomes: m = h’/h = -v/u. Learn more about Reflection of Light here.

## What is the formula of mirror formula?

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

## What is SI unit of magnification?

Magnification has no S.I. unit because magnification is a ratio of two same quantity (metre/metre). It is a constant number.

## WHAT IS lens and mirror formula?

The lens formula is 1f=1v-1u and the mirror formula is 1f=1v+1u.

## What is meant by 1 diopter?

A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m−1.) It is thus a unit of reciprocal length.