Question

The impression of an image persists on the retina for how long?

• A. 16 minutes
• B. 16 seconds
• C. $\frac{1}{16}th$ of a minute
• D. $\frac{1}{16}th$ of a second

Answer 1

The correct option is D $\frac{1}{16}th$ of a second

An individual image stays on the retina for about $\frac{1}{16}th$ of a second. This feature is called persistence of vision. Due to this, when many still images are shown in a sequence; they give the illusion of moving images. For example, when separate images are moved in front of the eyes at the speed of at least 16 images per second, we experience the images being real and live.