Question

5.) Determine the focal length of a diverging lens using a virtual object given:

Position of object/light source on optical bench = 10 cm

Position of 10 cm convex lens on optical bench = 40 cm

Position of image on optical bench = 57.2 cm

Position of -15 cm concave lens on optical bench = 45 cm

Position of image on screen = 92.2 cm

a) What is the object distance do2 for the second lens?

b) Is the object distance positive or negative?

c) Is the object real or virtual for the second lens?

d) Find and record the location of the final image.

e) Determine the focal lens of this diverging lens from the object distance do2 and the image distance di2.

Answer 1