Ray High School ADVARCH W2E Lab 15 Optics. - 15. OPTICS Answer the questions based on data from the lab. 1 What happens to parallel light rays when a convex lens is put in the

15. OPTICS
Answer the questions based on data from the lab.
1) What happens to parallel light rays when a convex lens is put in the path?
Remember a convex lens is thicker in the middle than on the edges. They
converge in the path.
2) A concave lens caves in the middle. It is thinner in the middle than the edges. What
happens to parallel light rays when a concave lens is put in the path?
They diverge in the path.
3) Concave lenses cannot form a real image. What use are they?
Concave lenses can be used to modify the light path.
4) What happens to parallel light rays when a concave mirror is put in the path?
The parallel light rays hitting concave mirror reflects and converge.
5) What happens to parallel light rays when a convex mirror is put in the path?
The parallel light rays reflect outwards and travel directly away it, so they diverge.
6) Check with someone that is nearsighted (can’t focus well at a distance) and wears
glasses. Are the lenses of the glasses thinner in the middle than on the edges?
(Make sure to offer to clean the glasses after touching them.)
Yes, they are thinner in the middle.
7) The light source is at 0 cm on the optical bench and the screen is at 50 cm.
8) The image of the filament focused on the screen when the lens was at 15 cm.
9) Calculate the focal distance of this lens using this equation: