Question

sign coversion in lens​

Answer 1

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. ... For converging mirrors, the focal length is positive. Similarly, a converging lens always has a positive f, and a diverging lens has a negative f

Answer 2

Answer:

Object is always placed to the left of the lens . All distance are measured from the optical centre of the mirrors . Distance measure in the direction of the incidents rays are positive and the distance measure in the direction opposite to that of the incidence ray are negitive ..

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