The spherical surface of lens results in ________
A. having a wide range of focal length
B. having a narrow range of focal length
C. having a wide range of curvature
D. having a narrow range of curvature
Answer:B
The spherical surface of lens results in ________
A. having a wide range of focal length B. having a narrow range of focal length C. having a wide range of curvature D. having a narrow range of curvature