Question

Derivation of lens formula of lakmir singh and manjit kaur books of physics class 9 or 10 refraction of light

Answer 1

Answer:

1/f = 1/v -1/u

For magnification:

m= h'/h = v/u

Answer 2

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. The formula is as follows:

1/v−1/u=1/f

Lens Formula Derivation

Consider a convex lens with an optical center O. Let F be the principle focus and f be the focal length. An object AB is held perpendicular to the principal axis at a distance beyond the focal length of the lens. A real, inverted magnified image A’B’ is formed as shown in the figure.

$\huge\mathbb{\purple{ハンはジャクソンが大好き}}$