No. It is not a plane surface like that of a plane mirror
because a plane mirror is straight and it does not have any curve
in it. the sculpture's surface is like that of a Convex Mirror
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A plane mirror is a mirror which is completely flat, easier for
your image to be reflected.
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plane mirror
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plane mirror is never a spherical mirror,spherical mirrors are
made up by cutting the part of the sherical balls and then
polishing them.while the plane mirror is just a sheet of polished
glass