Question

Rahul while waving his hand in front of his eyes, observes that his finger appear blurred if he brings his hands very close to his eyes .
a. Why do the fingers appear blurred ?
b. Is he having normal eyesight?

Answer 1

Explanation:

His fingers appear blurred due to persistence of vision it,means our eye and brain hold on to a series of images to form a single complete picture.

Here is your answer my dear mate

Answer 2

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His fingers appear blurred due to persistence of vision it,means our eye and brain hold on to a series of images to form a single complete picture.