A) 25 m and infinity
B) 2.5 m and 5 km
C) 2.5 cm and 5 km
D) 25 cm and infinity
Correct Answer: D
Solution :
The minimum object distance till which a normal human eye can see an object without any strain is known as the least distance of distinct vision. For the normal human eye this distance is 25 cm. A person with normal vision can see objects that are very far away (or at infinity). Hence, the range of vision for a normal human eye lies between 25 cm and infinity. The correct answer is D.
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