Principal Foci And Focal Length Of A Lens
Principal foci and focal length of a lens
graph TB
A[Principal foci and focal length of a lens]
B[Principal Foci]
C[Focal Length]
D[Convex Lens]
E[Concave Lens]
F[Formula]
G[Applications]
A --> B
A --> C
B --> D
B --> E
C --> F
A --> G
