As we know we can't see real image of any object directly.But in our eye, real image is formed as retina is the screen.Then why can't we the real image directly?
Answers
Explanation:
As we know that concave mirror forms a real image when object is placed beyond focal plane. This image can only be seen if a screen is kept at the point of intersection of rays(sharp image).If any screen is not kept then we are not able to see the image formed by meeting of rays.Whereas in case of virtual image we don't need any screen .Our eyes sense the rays coming (appear to be coming) from image source and we see image.so why do we need screen to see real image even though the rays are actually meeting at a point then also we are not able to see image without screen.In the following figure we need screen for a,b,c,d and e.
image formed by concave mirror
Answer:
The light sensitive cells on retina are activated when the image is formed on it. The general electrical signals are transmitted to the brain through optic nerve. The brain, while interpreting and processing these signals, reinvert the image formed and we see the object erect.
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