# The height of the object is 70 cm, if the height of the image is 35 cm.

August 31, 2021 | education

| **The height of the object is 70 cm, if the height of the image is 35 cm. Find the distance from the lens to the object if the distance from the lens to the image is 100 cm.**

Given:

h = 70 cm.

H = 35 cm.

f = 100 cm.

d =?

Solution:

Linear magnification of the lens H = H / h = f / d

based on this formula, we find d.

d is the distance from the lens to the object.

d = f * h / H

d = 100 * 70/35 = 20 cm.

Answer: If the distance from the lens to the image is 100 cm, then the distance from the lens to the object is 20 cm.

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