You are taking a picture of a giraffe that is standing far away from you. the image is just too small, so you swap the 60-mm-focal-length lens in your camera for a 960 mm telephoto lens. by what factor does this increase the size of the image?

Explanation:

Given that, you are taking a picture of a giraffe that is standing far away from you. The image is just too small, so you swap the 60-mm-focal-length lens in your camera for a 960 mm telephoto lens such that,

We need to find the the factor with which the size of the image increases. It can be calculated by taking ratios of both

So,

So, the size of image increases by a factor of 16. Hence, this is the required solution.

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