find the focal length of a lens of power -2.0 D . what type of lens is this?
Answers
Answered by
3
here is yøur answer
So, the focal length of the lens is 5 cm. The focal length of a convex lens is positive. So, it is a convex lens.
Answered by
5
Answer:
f = 1/power
f = -1/2
f = -0.5 m
concave lense
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