A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be:
A. Both concave
B. Both convex
C. the mirror is concave and the lens is convex
D. the mirror is convex, but the lens is concave
Answer:A
A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be:
A. Both concave B. Both convex C. the mirror is concave and the lens is convex D. the mirror is convex, but the lens is concave