Question

what do you mean by real and virtual image

Answer 1

In optics, a virtual image is an imageformed when the outgoing rays from a point on an object always diverge. ...Real images can be projected onto a diffuse reflecting screen, but a screen is not necessary for the image to form. A plane mirror forms a virtual imagepositioned behind the mirror.

Answer 2

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A real image is formed when the rays of light after reflection or refraction actually meet at some point whereas a virtual image is formed when the rays of light after reflection or refraction appear to meet at a point.