Question

Identity the mirror having focal length +15cm

Answer 1

Explanation:

The mirror having focal length of +15cm will be a convex mirror

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Answer 2

Answer:

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Explanation:

A mirror with focal length of -15cm will always be a concave mirror as its focal length lies to the left of the pole and pole is always taken as the origin (0,0) and according to new cartesian plane signs , it will be negative.