Question

explain sign convention of lenses and mirrors (convex and concave both)??


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Answer 1

Answer:

This means sign is always taken as – (negative) in front of a spherical mirror. ... For example; the distance of object is always taken as – (negative) in case of both types of spherical mirror, i.e. concave and convex mirrors. Sign is taken as + (positive) behind the spherical mirror.The equations we used for mirrors all work for lenses. A convex lens acts a lot like a concave mirror. Both converge parallel rays to a focal point, have positive focal lengths, and form images with similar characteristics. A concave lens acts a lot like a convex mirror.

Answer 2

This means sign is always taken as – (negative) in front of a spherical mirror. ... For example; the distance of object is always taken as – (negative) in case of both types of spherical mirror, i.e. concave and convex mirrors. Sign is taken as + (positive) behind the spherical mirror.

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