define the focal length of a lens
Answers
Answered by
2
Answer:
The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power. A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light.
Answered by
0
Answer:
I cant copy that pls send me uid
Similar questions