Edu Simulation

Lens Terminologies

Lens Type:

Convex lens converges rays, concave lens diverges rays.

Focal Length (f):

Distance from optical centre (O) to focus (F)

Object Distance (u):

Move the object left/right

Object Height:

Show labels Show rays Show values (u, v, f, m)

tip: For convex lens, if object comes closer than F, image becomes virtual and upright.

O = optical centre • F1, F2 = focus • 2F1, 2F2 = twice focal length