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JAMB Physics 2017 Paper

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Question : 38

Total: 49

When two mirrors are placed at an angle of 90º to each other, how many images will be formed when an object is placed in front of the mirrors

5
4
3
2

Solution:

When two mirror are inclined at an angle θ, the number of images formed, n = $\frac{360}{\theta}$ − 1

∴ since

\theta

= 90o

∴

\frac{360}{\theta}

− 1

= 4 − 1

= 3

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