Question

write lens formula and explain its terms​

Answer 1

Answer:

$\huge\underline\mathtt\red{Answer:}$

1/f = (μ-1) [1/R1 - 1/R2]

f = focal length, 1/f = power of lens, R1 and R2 are radii of curvature. μ = refractive index of glass used. R1, R2 and f are quantities, positive in the direction of light rays.

Answer 2

Explanation:

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

1/v−1/u=1/f

where v is distance of an image

u is distance of an object

f is focal length