Assertion : In a movie, ordinarily 24 frames | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The phenomenon where an image persists on the retina after the stimulus is removed is known as persistence of vision.This persistence of vision la

Vedclass · Accepted Answer

If the Assertion is correct but Reason is incorrect.

Vedclass · Answer

(C) The phenomenon where an image persists on the retina after the stimulus is removed is known as persistence of vision.This persistence of vision lasts for approximately $\frac{1}{16} \, s$.To perceive motion in a movie, the frame rate must be higher than the reciprocal of the persistence time, which is $16 \, 	ext{frames per second}$.Since $24 \, 	ext{frames per second}$ is greater than $16 \, 	ext{frames per second}$, the motion appears smooth.The Reason provided states the persistence time is $1/10 \, s$, which is factually incorrect as it is approximately $1/16 \, s$.Therefore, the Assertion is correct, but the Reason is incorrect.

Assertion : In a movie, ordinarily $24$ frames are projected per second from one end to the other of the complete film.
Reason : The image formed on the retina of the eye is sustained up to $1/10 \, s$ after the removal of the stimulus.

Similar Questions

$A$ man suffering from myopia can read a book placed at $10 \ cm$ distance. For reading the book at a distance of $60 \ cm$ with relaxed vision,the focal length of the lens required will be ...... $cm$.

The near point of a person is $75 \, cm$. In order for him to be able to read a book at a distance of $30 \, cm$,what should be the power of the spectacle lenses?

$A$ person can see clearly only up to a distance of $25 \, cm$. He wants to read a book placed at a distance of $50 \, cm$. What kind of lens does he require for his spectacles and what must be its power?

The near point and far point of a normal human eye are respectively:

$A$ person can see objects clearly only when they lie between $50\, cm$ and $400\, cm$ from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens the person has to use will be

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : In a movie, ordinarily $24$ frames are projected per second from one end to the other of the complete film.Reason : The image formed on the retina of the eye is sustained up to $1/10 \, s$ after the removal of the stimulus.