Question

What is difference between focus and focal point..?​

Answer 1

Answer:

Here you go

Explanation:

In geometrical optics, a focus, also called an image point, is a point where light rays originating from a point on the object converge. ... A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused.

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Answer 2

Answer:

There is no difference

focus (F)- a point on the principal axis where parallel rays reflect and converge or appear to converge (sometimes called focal point).

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