What is the rate at which still images of a moving object are flashed on the eye so that the eye perceives that object as moving? Where is this idea applied in our life?
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Solution

Each point: 1 Mark

1. If still images of a moving object are flashed on the eye at a rate faster than 16 frames per second, then the eye perceives this object as moving.
2. This idea is applied in motion pictures.

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Similar questions

Q. If still images of a moving object are flashed on the eye at a rate faster than

16 / s

, then the eye perceives the object as moving.This is because:

Fill in the following blanks with suitable words:

(a) The angle of ................... equals the angle of reflection.

(b) A person 1 m in front of a plane mirror seems to be ................... m away from his image.

(c) If you touch your ................... ear with right hand in front of a plane mirror, it will be seen in the mirror that your right ear is touched with ...................

(d) The size of pupil becomes ................... when you see in dim light.

(e) Night birds have ...................cones than rods in their eyes.

(f) The image of an object persists on the retina of an eye for about ................... second even after the object has disappeared.

(g) If the still pictures of a moving object are flashed on our eyes at a rate faster than ................... pictures per second,the eye perceives the object as moving.

(i) In a movie, the still pictures in proper sequence are projected on the screen usually at the rate of ................... pictures per second.

Q. 1) where is image formed in human eyes
2) how is amount of light that enters the eye controlled
3) how does eye focus on object that are near or at a distance

Statement 1: Hypermetropia is corrected by use of convex lens

Statement 2: The eye lens has to become thick so that it Hypermetropia (hyperopia) also known as farsightedness is a common type of refractive error where distant objects may be seen more clearly than objects that are near is able to bend light coming from a nearby object even more so as to form image at retina itself which a hypermetropic eye is unable to do so we place an extra convex lens which assists the eye lens in further convergence of light.

Light emits from our eyes, strikes to the object and reflects back to our eyes. This makes that object visible.

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What is the rate at which still images of a moving object are flashed on the eye so that the eye perceives that object as moving? Where is this idea applied in our life? [2 MARKS]

Each point: 1 Mark 1. If still images of a moving object are flashed on the eye at a rate faster than 16 frames per second, then the eye perceives this object as moving. 2. This idea is applied in motion pictures.

What is the rate at which still images of a moving object are flashed on the eye so that the eye perceives that object as moving? Where is this idea applied in our life?
[2 MARKS]

Each point: 1 Mark

1. If still images of a moving object are flashed on the eye at a rate faster than 16 frames per second, then the eye perceives this object as moving.
2. This idea is applied in motion pictures.