Optician has prescribed corrective lens indicating -0.4D. This means the
lens prescribed is convex.
(1)
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Answered by
3
Answer:
no it means that the lens is concave.
Step-by-step explanation:
i hope it helps you.....
Answered by
2
Answer:
The focal length of concave lens is negative. Therefore its power is also negative.
Thus, the lens prescribed is concave lens
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