NECO 2000 Physics · Question 10

The image is a plane mirror is

Options

A.inverted, real with a magnificant of $\frac{1}{2}$
B.inverted, virtual with a magnification of 1
C.inverted, real with a magnification of 2
D.upright, virtual with a magnificent of 1
E.upright, real with a magnification of 2

Answer: D. upright, virtual with a magnificent of 1

Explanation written with AI and checked against the answer key

Question analysis: The question asks for the characteristics of an image formed by a plane mirror.

Concept: A plane mirror forms an image with these properties:

Upright (erect): The image is not turned upside down. (It is laterally inverted, meaning left and right are swapped, but it is not inverted top to bottom.)
Virtual: The reflected rays only appear to come from behind the mirror, so the image cannot be caught on a screen.
Same size as the object: Magnification = image height ÷ object height = 1.
Same distance behind the mirror as the object is in front: image distance = object distance.

Step-by-step solution:

Real or virtual? The image forms behind the mirror, where light does not actually reach. It is virtual. This eliminates A, C and E.
Upright or inverted? A plane mirror image is upright. This eliminates B.
Magnification? Using m = image height / object height = 1, the magnification is 1.

This leaves D: upright, virtual with a magnification of 1.

Tip: Remember the plane mirror as "VUS": Virtual, Upright, Same size. Also, "laterally inverted" refers to left-right reversal, not upside-down. Do not confuse it with "inverted" in the options.

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