what do you think you know about physics, physics is the study of matter under the effect of energy, but does this includes solid states bodies, atoms at ground states, object at microscopic size or object moving faster than light? these and more is what prompt me to ask again what is physics?
to know if an image is real or virtual is to use a screen,
real image will appear on the screen while a virtual image will not be appear
on the screen,
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