Question

what do you mean by image of an object ? what is a virtual image

Answer 1

Answer:

In optics, an image is defined as the collection of focus points of light rays coming from an object. A real image is the collection of focus points actually made by converging rays, while a virtual image is the collection of focus points made by extensions of diverging rays.

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Answer 2

Image-

If light rays coming from a point on object meets at another point after reflection, or appear to come from other point, then this second point is called the image of first point.

Images are of two types-

a) Real Image-

If light rays coming from a point, meets at another point actually after reflection, then the image formed is called real image.

b) Virtual Image-

If light rays coming from a point, does not meets actually  at another point after reflection, or appear to come from another point, then the image formed is called virtual image.