Question

2. Rachel 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

(a) 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.

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