LIGHT- REFLECTION & REFRACTION || class 10 physical science in odia || Lens formula || power of lens

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Let's see how to use lens formula (1/v-1/u= 1/f) to locate images without having to draw ray diagrams.
The magnification of a lens is defined as the ratio of the height of an image to the height of an object. It is also given in terms of image distance and object distance. It is equal to the ratio of image distance to that of object distance. m = h ′/ h = v /u.
Power of a Lens= 1/focal length
The power of the lens is calculated in Diopters (D) if the focal length is given in meters. Another important thing to remember is that a diverging lens has a negative optical power, while a converging lens has positive optical power.
IMAGE FORMING IN SPERICAL LENS : • LIGHT - REFLECTION & R...