A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads : Left eye : + 2.50 D Right eye : + 2.00 D (a) State whether these lenses are thicker in the middle or at the edges. (b) Which lens bends the light rays more strongly ? (c) State whether these spectacle lenses will converge light rays or diverge light rays.

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Solution

Left eye:+2.50 D

Right eye:+2.00D

a)these lens are thicker in the middle

b)lens having great power of +2.50 D will bend the light rays more strongly.

c)These spectacles lenses will coverge light rays.

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Left eye:+2.50 D Right eye:+2.00D a)these lens are thicker in the middle b)lens having great power of +2.50 D will bend the light rays more strongly. c)These spectacles lenses will coverge light rays.

Left eye:+2.50 D

Right eye:+2.00D

a)these lens are thicker in the middle

b)lens having great power of +2.50 D will bend the light rays more strongly.

c)These spectacles lenses will coverge light rays.