Question

Lens formula is given by……………………………

Answer 1

Hint In this question, we have to mention the formula of the lens. Here we study the lens and the properties of the lens.

Compleet Step by Step Answer:
Lens: A transmissive optical device that focuses on a disperse light beam using refraction is known as a lens. Lenses are created from components such as plastic or glass and are ground and molded or polished as per the desired pattern. Unlike a prism, a lens can focus light to form an image.
Lens equation: The relationship among the image distance $v$, object distance $u$, and the focal length $f$ of a lens are given by the lens formula. Lens formula is relevant for convex as well as concave lenses. These lenses have negligible density. The lens formula is given below.
$\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}$
Here,
$v$= Distance of the image from the optical center of the lens.
$u$= Distance of the object from the optical center of the lens.
$f$= The focal length of the lens.
The lens formula applies 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. However, if the equation provides a negative focal length, then the lens is a diverging, not converging

Note: To solve this question we have to study the derivation of the lens formula. And the other properties related to the lens to easily solve this question. The lens formula is used to calculate the focal length, the distance of the image, and the distance of the object. After learning these terms and properties you can easily solve this type of question.