The unit of focal length
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Answer:
dioptre
Explanation:
t is equal to the reciprocal of the focal length of the device: P = 1/f. High optical power corresponds to short focal length. The SI unit for optical power is the inverse metre (m−1), which is commonly called the dioptre.
Anonymous:
dioptre is the unit of power of a lens
Focal lengths are measured in meters or milimeters or in its reciprocal 1/1Meter, called dioptres
yes you are right
Ok
diaptor also used for nearer distance
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Answer:
Explanation:
metres
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