refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium.
A concave mirror has a reflective surface that is curved inward and away from the light source.
Try making a light travel through both air and water
In optics, a virtual image is defined as the collection of focus points of light rays coming from an object.
Energy can neither be created nor get destroyed
Convex Mirror is a curved mirror where the reflective surface bulges out towards the light source.
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