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A concave mirror for face viewing has focal length of 0.4 m. The distance at which you hold the mirror from your face in order to see your image upright with a magnification of 5 is:

1. 0.16 m
2. 0.16 m
3. 0.32 m
4. 0.24 m

Correct answer: 0.32 m

Solution

To see an upright image with a magnification of 5 using a concave mirror, the object distance must be set at a specific point that relates to the focal length and magnification. Using the mirror formula and magnification equation, the calculations show that holding the mirror at 0.32 m achieves the required conditions.

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