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Q. |
Persistence of vision is the Principle behind: |
A. | Binocular |
B. | Cinema |
C. | Periscope |
D. | Camera |
Answer» B. Cinema | |
Explanation: Persistence of vision is the phenomenon of the eye by which an afterimage is thought to persist for approximately one twenty-fifth of a second on the retina. In the early days of cinema, it was scientifically determined that a frame rate of less than 16 frames per second (frame/s) caused the mind to see flashing images. |
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