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| Mirror Formula (Convex Mirror) |
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| Let AB be an object placed on the principal axis of a convex mirror of focal length f. u is the distance between the object and the mirror and v is the distance between the image and the mirror. |
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| But DE = AB and when the aperture is very small EF = PF. |
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 Equation (2) becomes |
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 From equations (1) and (3) we get |
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| [PF = f, PB1 = v, PB = u, PC = 2f] |
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| Dividing both sides of the equation (4) by uvf we get |
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