Diameter of human eye lens is 2 mm. Whatwill be the minimum distance between two points to resolve them, which are situated at a distance of 50 meter from eye. The wavelength of light is5 0 0 0 Å (20…

Question

Diameter of human eye lens is 2 mm. Whatwill be the minimum distance between two points to resolve them, which are situated at a distance of 50 meter from eye. The wavelength of light is5 0 0 0 Å (2002)

Accepted Answer

Correct answer: C. (c) : Resolving power of eye lens = dλ= 2×1 0^−15 0 0 0×1 0^−8= 1d θ [Given d= diameter oflens =2 mm =2×1 0^−1 cm, λ=5 0 0 0 Å=5 0 0 0×1 0^−8 cm ]. Let S be the minimum distance between two points so that it may be resolved. ∴S=r d θ. Here r=5 0 m=5 0 0 0 cm. S=5 0 0 0× 5 0 0 0×1 0^−82×1 0^−1=1.2 5 c m.

$Diameter of human eye lens is 2 mm. Whatwill be the minimum distance between two points to resolve them, which are situated at a distance of 50 meter from eye. The wavelength of light is 5000 A ˚ (2002)$

Solution

More Optical Instruments PYQs