Question #2856

An object is 30 cm from a concave mirror of 15 cm focal length. The object is 1.8 cm high. Find the location of the image and its height.

Expert's answer

The formula of concave mirror is

1/f = 1/d0 + 1/d1

-1/15 = -1/30 + 1/d_{1}

d_{1} = -15

Thus the image would be at the same distance as the object, so the height is the same but the image is inverted.

1/f = 1/d0 + 1/d1

-1/15 = -1/30 + 1/d

d

Thus the image would be at the same distance as the object, so the height is the same but the image is inverted.

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