Question

Write the sign conventions for convex and concave mirrors

Answer 1

For concave mirror

Since object is placed in front of the mirror the object distance is taken as negative

Similarly focus and radius if curvature is also negative . height of image is taken as positive in case of errect image n negative in case of inverted image. When image is formed near the mirror it is negative n behind the mirror it is positive

Convex mirrors

When the image is formed at the front of the mirror sign of object is negative . focus n centre of curvature is positive. In case if convex mirror n erect image is fomed which is

positive n the image formef behind the mirror tht is distance of image is positive

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