**Write Lens Maker Formula And Explain The Terms In It**. Lens formula is applicable for convex as well as concave lenses. Are the radius of curvature of the lens.

write the lens makers formula and explain the terms in it from brainly.in

Are the radius of curvature of the lens. A common gaussian form of the lens equation is shown below. The lens has a small aperture.

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When a light ray enters a medium with refractive index n. from a medium with refractive index n. at culved interface with radius of curvature r is given by. Lens maker’s formula defines a relation between the lens’s focal length. the refractive index of the material used to make the lens. and the radii of curvature of the two curved surfaces.

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The formula is as follows: It is used by lens manufacturers to make the lenses of particular power from the glass of a given refractive index.

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(a) lens maker’s formula : The object lies close to principal axis.;

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As per optical physics. lens formula relates the distance of an object (u). the distance of an image (v). and the focal length (f) of the lens. The focal length (f) of a converging lens is considered positive and that of a diverging lens is considered negative.

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Another situation that has to be considered is the lens maker’s formula accounting for objects that are present in different media. The equation relating the object distance (u). the image distance (v) and the focal length (f) of the lens is called the lens formula.

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F= focal length of the lens. F = focal length of lens.

#### Applicable For Both The Convex And Concave Lenses. The Lens Formula Is Given As:

Lens maker formula is the formula for the manufacturer of lenses. Another situation that has to be considered is the lens maker’s formula accounting for objects that are present in different media. The formula is as follows:

#### N Is The Refractive Index.

This is the form used in most introductory textbooks. R1 = radius of curvature of first surface on lens. Mathematically it is given as :

#### Write The Lens Makers Formula And Explain The Terms In It?

(a) lens maker’s formula : Lens maker’s formula defines a relation between the lens’s focal length. the refractive index of the material used to make the lens. and the radii of curvature of the two curved surfaces. Let b and d be the poles. c 1 and c 2 be the centres of curvature and r 1 and r 2 be the radii of curvature of the two lens surfaces abc and adc. respectively.

#### Lens Manufacturers Regularly Use It To Make Lenses Of The Required Focal Length From Glasses Of Different Refractive Indexes.

Where. f is the focal length. Where. v = distance of image formed from the optical center of the lens. R1 = radius of curvature of first surface on lens.

#### In Medium With N 2 N 1

If n 1 is refractive index of surrounding media. F= focal length of the lens. Either form can be used with positive or negative lenses and.