Question
What is the magnification produced by a rear view mirror fitted in vehicles?

Answer

The convex mirror forms virtual, erect and diminished image of the object and rearview mirror also form some type of image.
Therefore, magnification (m) produced by a rear view mirror fitted in vehicles is less than one i.e., m < 1.
Magnification (m) $=\frac{\text{Image height}}{\text{Objects height}}$ 

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