Question

why a concave mirror is used as a shaving mirror over a plane mirror

Answer 1

Answer:

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A concave mirror is preferred as a shaving mirror because it forms a magnified and erect image of the face when the mirror is brought closer to tha face. ... Now, using the mirror formula, i.e., The screen should be placed at a distance of 54 cm on the object side of the mirror to obtain a sharp image.

Answer 2

A concave mirror is preferred as a shaving mirror because it forms a magnified and erect image of the face when the mirror is brought closer to tha face. An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm !