Find the focal lenght of a lens of power -2.0d . What type of lens is this
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1
Answer:
We know that,
P = 100 / f (in cm.)
-2 = 100/ f
f = 100/2
f = 50 cm.
focal length is positive so the lens is convex.
Answered by
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Answer:If a lens has a shorter focal length it is said to be more powerful. The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D).
Explanation:
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