Q. In a T.V. screen the motion effect is made possible by the :

A
Reflection
B
Diffraction
C
Scattering
D
Persistence of vision
Solution:

Persistence of vision traditionally refers to the optical illusion that occurs when visual perception of an
object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye.

The illusion has also been described as “retinal persistence”, “persistence of impressions”,simply
“persistence” and other variations.

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