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CBSE Class 10 Answered

How do we see moving pictures on a cinema screen?
Asked by Topperlearning User | 21 Jul, 2017, 03:11: PM
answered-by-expert Expert Answer

The image of an object lasts on retina for 1/16 th second. In cinema, pictures move with speed of 24 pictures or frame per second. So the next picture is seen before the image of first has died and the pictures appear as moving on the screen. This is due to persistence of vision.

Answered by | 21 Jul, 2017, 05:11: PM

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