Question

Persistence of vision is the time for which the sensation of an object remains in the eye even after the object is removed. It is about _____ times of one second for a normal human eye.

• A. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> $\frac{1}{10}$
• B. $\frac{1}{12}$
• C. $\frac{1}{14}$
• D. $\frac{1}{16}$

Answer 1

The correct option is D $\frac{1}{16}$

We see an object because the eye lens creates its image on the retina. The image is on the retina as long as the object is in front of us. The image disappears as soon as the object is taken away. However, this is not instantaneous and the image remains imprinted on our retina for $\frac{1}{16}$ of a second after the object is removed. The sensation on retina persists for a while.This is called persistence of vision.