we know that virtual images cannot be obtained on screen. Yet whaen we see a virtual image we obviously bring it to the screen that is retina of our eyes.Is this a contradiction?

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Solution

Virtual images can be formed on screen. But we can use other lens to make real image out of virtual image (diverging rays). Suppose there is a converging lens in font of a virtual image (or you can say in front of a diverging rays). And if the virtual image is at a distance more that the focal length of the converging lens then it will form real image. That's what happens in retina.

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Similar questions

A virtual image, we always say, cannot be caught on a screen. Yet when we ‘see’ a virtual image, we are obviously bringing it on to the ‘screen’ i.e., retina of our eye. Is there a contradiction? [3 MARKS]

Q. Answer the following questions:

(a) You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain.

(b) A virtual image, we always say, cannot be caught on a screen. Yet when we see a virtual image, we are obviously bringing it on to the screen (i.e., the retina) of our eye. Is there a contradiction?

(c) A diver under water, looks obliquely at a fisherman standing on the bank of a lake. Would the fisherman look taller or shorter to the diver than what he actually is?

(d) Does the apparent depth of a tank of water change if viewed obliquely? If so, does the apparent depth increase or decrease?

(e) The refractive index of diamond is much greater than that of ordinary glass. Is this fact of some use to a diamond cutter?

Q. An image that cannot be obtained on a screen is called a________ (real, virtual) image.

Q. Which of the following statement(s) is/are correct?

I. An image that can be obtained on a screen is called a virtual image.
II. A convex lens always forms a virtual image.
III. A concave lens always forms a virtual image.

Can the image formed by a plane mirror be projected onto a screen

Can you please check my answer

Ans: no the image formed by the plane mirror can't be projected on the screen as a plane mirror forms a virtual image and a virtual image can be obtained on the screen

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