find the focal length of a lens of power-2.0d. What type of lens is this?
Answers
Answered by
4
Answer:
power of lens= 1/f(in m. )
-2D= 1/f
f=-0.5 m
therefore lens is concave
Answered by
4
Answer:
-0.5
Explanation:
P = 1/F
F = 1/P
F =1/-2
=-0.5
focal length is negative which indicates that lens is concave.
Similar questions