Lenses And Images

Question 1

What happens to rays in a concave lens?

Answer 1

1) Rays parallel to axis diverge in line with focus

2) Rays going through centre continue straight

Question 2

What is a real image?

Answer 2

When real rays cross to form an image

Question 3

What is a virtual image?

Answer 3

• When virtual rays cross to form an image

- It seems as if light is coming from another place

Question 4

What happens to rays in a convex lens?

Answer 4

1) Rays parallel to axis converge

2) Rays going through the centre continue straight