Lecture Demonstrations
Lecture Demonstrations

Optics

Geometric Optics

Used to demonstrate the converging and diverging properties of lenses.

APPARATUS:
LOCATION:
     Multi ray projector
I3
     12 volt battery  
     Lenses
I3


Mount the multi ray projector on the board. Let the ray hits a convex lens. Observe the converging property of the convex lens and determine the focal point. Then, let the rays hit a concave lens. Show how rays are diverted when they hit a concave lens.