Please explain the sign conventions of lens!!
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Sign convention - definition
Sign convention - definitionAccording to it: Object is always placed to the left of lens. All distances are measured from the optical centre of the mirror. ... Distances measured along y-axis above the principal axis are positive and that measured along y-axis below the principal axis are negative.
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Explanation:
The sign convention for lenses is similar to that for mirrors. Again, take the side of the lens where the object is to be the positive side. ... Similarly, a converging lens always has a positive f, and a diverging lens has a negative f. The signs associated with magnification also work the same way for lenses and mirrors.
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