Test Index

JAMB Physics 2012 Paper

Question : 26

Total: 42

Solution:

Concept:

For a plane mirror, the image formed is virtual, upright, and exactly the same size as the object.

Explanation:

Magnification is given by

m = \frac{\text{image height}}{\text{object height}}

Object height

= 2\,\mathrm{cm}

In a plane mirror, image height

= 2\,\mathrm{cm}

m = \frac{2}{2} = 1

The object distance of

10\,\mathrm{cm}

does not affect magnification for a plane mirror.

Answer:

1.0

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