A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads:
Left eye: +2.50D, Right eye: +2.00D
Left eye: +2.50D, Right eye: +2.00D
- State whether these lenses are thicker in the middle or at the edges.
- Which lens bends the light rays more strongly?
- State whether these spectacle lenses will converge light rays or diverge light rays.
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- These lenses are thicker in the middle because they are convex lens.
- Power is inversely proportional to focal length; therefore, shorter focal length will mean strong bending. Hence, lens for left eye will bend light rays more strongly.
- These spectacles will converge light rays because convex lens has positive power.
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