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A camera creates a real image of a tree 40 m away. The image is formed 3.0 cm behind the lens. Find the magnification.



Answer :

The magnification of the camera is 0.075.

What is magnification?

The magnification is the ratio of the image distance and the object distance.

Magnification = image distance / object distance  

Given is the image formed behind lens v=3.0cm and the tree distance u =40 cm

Left of the lens is taken negative and its right is taken positive.

So, M = - v/u

Substitute the value, we get

M = -3/(-40)

M = 0.075

thus, the magnification is 0.075

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