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Defects of Vision

Owls have a b...

Question

Owls have a better night vision but poorer colour perception than humans due to _ and respectively, in their eyes.

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Q. A person A can clearly see objects between 25 cm and 200 cm. Which of the following may represent the range of clear vision for a person B having muscles stronger than A, but all other parameters of eye identical to that of A?
(a) 25 cm to 200 cm
(b) 18 cm to 200 cm
(c) 25 cm to 300 cm
(d) 18 cm to 300 cm

What gives a perception of depth or three dimensional vision to human eye ?

Range of vision for a normal healthy human eye is

Q. Assertion (A) : Night birds have less cones than rods in their eyes.

Reason (R) : Rod cells are sensitive to dim light.

Q. Humans have a better sense of smell than dogs.

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