The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Which lens has a greater focal length?
Lens for right eye has greater focal length because power is inversely proportional to focal length.
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Solution The Optical Prescription for a Pair of Spectacles is : Right Eye : −3.50 D Left Eye : −4.00 D Which Lens Has a Greater Focal Length? Concept: Concept of Human Eye.