An object is placed 10 cm from a concave mirror of focal length, 5 cm. Determine the image distance.

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Solution

Formmation of image by concave mirror:
Using mirror formula, $\frac{1}{f} = \frac{1}{v} + \frac{1}{u} \frac{1}{v} = \frac{1}{- 5} - \frac{1}{- 10}$
$∴ v = 10 c m$ in front of the mirror.

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An object is placed 10 cm from a concave mirror of focal length, 5 cm. Determine the image distance.

Formmation of image by concave mirror: Using mirror formula, 1f=1v+1u1v=1−5−1−10 ∴v=10 cm in front of the mirror.

Formmation of image by concave mirror:
Using mirror formula, $\frac{1}{f} = \frac{1}{v} + \frac{1}{u} \frac{1}{v} = \frac{1}{- 5} - \frac{1}{- 10}$
$∴ v = 10 c m$ in front of the mirror.