What is the focal length if the power of a Lens is -4D?
(Note: [1] Please send me step by step explanation.
[2] Please do not give unnecessary answers, it's my humble request)
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Answer:
The power of a lens is defined as the reciprocal of its focal length in metres, or P=f1, where P is the power in diopters and f is the focal length in metres.
Explanation:
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Answer:
Focal length (f) is where the rays of light focus to after passing through the lens. So if f=1m then the power (F) of the lens would be 1\1
Explanation:
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