lenses

Question 1

how do lenses form an image?

Answer 1

by refracting light

Question 2

what are the two main types of lenses?

Answer 2

convex and concave

Question 3

what is the distance from the lense to the principal focus called

Answer 3

the focal length

Question 4

a concave lense is wider at the 1.____ than the

2._______

Answer 4

1. edges

2. middle

Question 5

what types of images can convex lenses produce

Answer 5

real or virtual

Question 6

why are convex kenses occasionally called converge lenses

Answer 6

due to parallel rays of light entering the convex lense converge

Question 7

what type of images can concave lenses produce

Answer 7

only virtual

Question 8

what is the equation to work out magnification

Answer 8

image height / object height