Physics help?

[CrucifiX]

So, I am studying O-level physics right now.
Chapter no. 6, is where I got stuck. I mean, the questions after it, like where should the image be positioned to obtain larger, virtual, etc image and all... Couldn't understand it. Also, I can't quite understand the difference between a real and a virtual image. I tried googling, reading notes, but nothing helped. Bah.. Am I dumb?

Oh, and hi, XtremePapers community

 

[Nibz]

Hi and welcome to XPC.

This image pretty much explains the concept:

Real image: The image can be captured in a screen. The image is always inverted. Light rays actually meet to form a real image.
Virtual Image: The image cannot be captured in a screen.The image is always erect. Light rays do not actually meet to form a virtual image.

 

[CrucifiX]

Ah, thanks a lot. Does anybody have the answers to the Light and Sight Additional questions, though?