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1) explain difference between a lens and a mirror; the difference between converging lens and diverging...

1) explain difference between a lens and a mirror; the difference between converging lens and diverging lens; the difference between virtual image and real image.
2) when standing in front of a flat mirror, how far away from your eyes does your image appear to be? is this image virtual or real? How can you tell?

Please answer every part of questions.
Science   Advanced-Physics   
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