Question

A question about TOTAL INTERNAL REFLECTION (image)

Answer 1

I'm sorry, but where are you stuck?
Notice that the light rays from Robbie can be refracted when going through water into light. i.e. there is a chance of total reflection happening.
Do you need an explanation of this?

Answer 2

My friends said that the image is formed on the surface of the water but I think the image appears to be in the air above the surface of the water. So I was wondering where the two rays would be drawn in the diagram, thanks!

Answer 3

In this case, the rays from Robbie will be intersecting above the water surface, but it is a virtual image.
There would be the total reflection and direct sight of Robbie.
You're familiar with total reflection?

after the incident angle exceeds a particular critical angle, the incident ray will be reflected instead of refracted. The image formed will then be "inside" the water mirror.
You follow?

Answer 4

this should clear things up