Question

The magnification by a lens is -3. Name the lens
and state how are u and v related ?​

Answer 1

It is a convex lens

Explanation:

since, magnification is negative the image will be real

Answer 2

Answer:

It is a concave lens

As, the magnification is -ve therefore, it will form erect and virtual image

v = distance of image .

u = distance of object .

M = - v / - u = v / u

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