Question

the magnification produced by a plane mirr is +1.what does this mean?

Answer 1

The magnification is +1. This means that
- image is same size as object
-image is virtual and erect
- image is equidistant
-image is laterally inverted

Answer 2

hello friend...!!

if the magnification produced by the plane mirror is +1 , it refers that the image height is equal to the object height , also the sign( + ) indicates the image is erect.
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hope it is useful..!!