Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 2: Problem 5

Is it necessary to project a real image onto a screen to see it?

Short Answer

Expert verified
It is not necessary to project a real image onto a screen to see it, as our eyes can perceive real images directly when light rays converge at the correct distance. However, projecting a real image onto a screen makes it easier to share with others. For virtual images, they cannot be projected onto a screen, but our eyes and brain can still perceive them directly.

Step by step solution

01

Define Real and Virtual Images

A real image is formed when light rays converge at a point, and the image can be projected onto a screen. In contrast, a virtual image is formed when light rays appear to converge at a point, but they do not actually converge. In this case, the image cannot be projected onto a screen.
02

Understand How Our Eyes Perceive Images

Our eyes perceive images when light rays from an object pass through the eye lens and form a real image on the retina. Our brains then interpret the information from the retina to create the image we consciously perceive.
03

Discuss the Projection of Real Images

In case of real images, it is not necessary to project the image onto a screen. Our eyes can also perceive a real image if the light rays converge at the correct distance from the eye lens, allowing them to form an image on the retina. When a real image is projected onto a screen, it just becomes easier to share the image with others, as everyone can view the screen at the same time.
04

Discuss the Perception of Virtual Images

As mentioned earlier, virtual images cannot be projected onto a screen. However, our eyes can perceive virtual images directly without any screen. When viewing a virtual image, the light rays appear to converge at a point but do not actually converge. Instead, our eyes and brain create the illusion of a real image. An example of this is when we look at ourselves in a plane mirror; the image we see is a virtual image.
05

Conclusion

It is not necessary to project a real image onto a screen for us to see it. Our eyes can perceive real images directly when light rays converge at the correct distance. In the case of virtual images, we are unable to project them on a screen, but our eyes and brain can perceive them directly.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

What are the differences between real and virtual images? How can you tell (by looking) whether an image formed by a single lens or mirror is real or virtual?

Devise an arrangement of mirrors allowing you to see the back of your head. What is the minimum number of mirrors needed for this task?

A near-sighted person has afar point of 80 cm. (a) What kind of corrective lens the person will need if the lens is to be placed \(1.5 \mathrm{cm}\) from the eye? (b) What would be the power of the contact lens needed? Assume distance to contact lens from the eye to be zero.

A far-sighted person has a near point of \(100 \mathrm{cm}\). How far in front or behind the retina does the image of an object placed \(25 \mathrm{cm}\) from the eye form? Use the cornea to retina distance of \(2.5 \mathrm{cm}\)

A nearsighted man cannot see objects clearly beyond \(20 \mathrm{cm}\) from his eyes. How close must he stand to a mirror in order to see what he is doing when he shaves?
See all solutions

Recommended explanations on Physics Textbooks

Space Physics

Read Explanation

Turning Points in Physics

Read Explanation

Modern Physics

Read Explanation

Work Energy and Power

Read Explanation

Particle Model of Matter

Read Explanation

Magnetism

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free