What types of lenses must be L1 and L2?
A. Both concave
B. Both convex
C. L1 – concave and L2 – convex
D. L1 – convex and L2 – concave
Answer:B
What types of lenses must be L1 and L2?
A. Both concave B. Both convex C. L1 – concave and L2 – convex D. L1 – convex and L2 – concave