# Quick Answer: WHAT IS Lens And Mirror Formula?

## What are 3 types of mirrors?

Three common types of mirror are the plane mirror, which has a flat, or plane, surface; the convex mirror; and the concave mirror..

## What is the raw material of mirror?

Glass is also considered a good material for mirrors because it can be molded into various shapes for specialty mirrors. Glass sheets are made from silica, which can be mined or refined from sand. Glass made from natural crystals of silica is known as fused quartz.

## 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 1 f 1 v 1 u?

Therefore: h/f = h/u + h/v and so 1/f = 1/u + 1/v and the formula is proved. An object is placed in front of a converging lens and gives a real image with magnification 5; when the object is moved 6 cm along the axis of the lens a real image of magnification 2 is obtained. What is the focal length of the lens?

## Which mirror is used by dentist?

A concave mirror gives the dentist a magnified reflection of the mouth while also refracting a bit of light. This means the image in the mirror is larger, brighter, and, for the dentist, easier to see. Another plus of using a concave mirror is that the image in the mirror isn’t inverted.

## What is difference between mirror and lens?

The mirror is glass with one side silvery backing produces an image by reflection on only one surface. The lens is a transparent substance that produces images by refraction in any surface of the two surfaces. It can be plane or curved.

## What is a lens Class 10?

Lens: A lens is a piece of a refracting medium bounded by two surfaces, at least one of which is a curved surface. The commonly used lenses are the spherical lenses, which have either both surfaces spherical or one spherical and the other a plane one. … It converges a parallel beam of light on refraction through it.

## 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.

## Who gave the lens formula?

Thin Lens Formula — from Eric Weisstein’s World of Physics. in 1693 (Steinhaus 1983, p. 301).

## What is Mirror and its types?

There are different types of mirrors in physics. Mirrors can be broadly classified as plane mirrors, rotating mirrors, inclined mirrors and spherical mirrors. Moreover, spherical mirrors can be further classified into two types, i.e. a concave spherical mirror and a convex spherical mirror.

## In which mirror image is always erect?

Convex mirrorConvex mirror always forms an erect and virtual image.

## What is the power of lens?

Power of lens is known as the inverse of the focal length of the lens measured in meter(m). S.I unit of power = Dioptre (D) Power of lense = 1/ focal length in meter.

## Which one is correct in case of mirror?

In case the mirror is below the object or above the object, then the reflection or the image is obtained by turning the object upside down i.e. top goes to bottom and vice versa. Thus, following the logic the mirror image of the given figure is as shown in (C) Was this answer helpful?

## What is Mirror formula?

A mirror formula can be defined as the formula which gives the relationship between the distance of object ‘u’, the distance of image ‘v’, and the focal length of the mirror ‘f’.

## What is V and U in Lens formula?

where u is the distance of the object from the lens; v is the distance of the image from the lens and f is the focal length, i.e., the distance of the focus from the lens.

## What is the use of mirror formula?

To obtain exact information about the size and magnification of the image, and the distance of the image from the spherical mirror, we can use the mirror formula.

## Which chemical is used in mirror?

Chlorine chemistry, in the form of the compound stannous chloride, plays a role in manufacturing mirrors during the process known as “silvering.” Stannous chloride, SnCl2, is a chemical compound of tin (Sn) and chlorine (Cl). (The term “stannous” comes from the Latin word for tin, stannum.)

## How do you prove Mirror formula?

Derive Mirror Formula for ConvexPutting the above values in eq [3] PB+PCPC−PB′ = PBPB′ = −u+RR−v = −uv.⇒ -uv + vR = -uR + uv. ⇒ uR + vR = 2uv.After dividing, uvR The final form of the equation is. 1V + 1U = 1f.[Image will be Uploaded Soon] From the above image, we get.

## What is U in convex lens?

See according to the New Cartesian Sign convention U i.e., the object distance is always in the left hand side of the lens or mirror i.e., to -X side. That is why U is always taken as negative. … And for image distance, V in lens it is taken as positive in Convex lens since image is formed on +X side.

## WHAT IS lens formula?

What is Lens Formula? In optics, the relationship between the distance of an image (v), the distance of an object (u), and the focal length (f) of the lens is given by the formula known as Lens formula. Lens formula is applicable for convex as well as concave lenses. These lenses have negligible thickness.

## What is concave mirror formula?

1/f= 1/u + 1/v. This equation is referred to as the mirror formula. The formula holds for both concave and convex mirrors.

## What is the power of mirror?

Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or diverges light. It is equal to the reciprocal of the focal length of the device: P = 1/f.

## What is difference between mirror formula and lens formula?

What is the difference between Concave and Convex mirror?…Difference between Mirror and Lens.MirrorLensMirror formula is 1/f = 1/v + 1/uLena formula is 1/f = 1/v – 1/u3 more rows•Apr 27, 2020

## Which lens is used in plane mirror?

2) Concave Lens:MirrorLensIt reflects the light that falls on its surface.It refracts the light. Convex lens converges and concave lens diverges the light.It can be plane or spherical.It has two surfaces out of which one is curved inwards or outwards.3 more rows