Lesson: Image Production Using Lenses

In this lesson, we will learn how to define the focal length of a lens, describing how light passed through convex and concave lenses forms real and virtual images.

Sample Question Videos

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Worksheet: Image Production Using Lenses • 12 Questions • 1 Video

Q1:

A convex lens is used to make a magnified virtual image of an object, as shown in the diagram. What is the magnification produced by the lens?

Q2:

A lens is used to produce a real image that is smaller than the object that produced it. Which of the following statements about the distance between the lens and the object is true?

Q3:

Which of the following statements is a correct statement about virtual images?

Q4:

A convex lens is used to produce a virtual image. Which of the following statements about the distance between the lens and the object is true?

Q5:

A lens is used to produce a real image that is larger than the object that produced it. Which of the following statements about the distance between the lens and the object is true?

Q6:

A lens is used to produce a real image that is the same size as the object that produced it. Which of the following statements about the distance between the lens and the object is true?

Q7:

Which of the following statements is not a correct statement about real images?

Q8:

A convex lens produces a real image that is projected on a screen, and then the screen is moved away from the lens, resulting in a blurred image, as shown in the diagram. Which of the following statements most correctly explains how the image projected onto the screen changes when the screen is moved?

Q9:

A convex lens is used to produce a real image, as shown in the diagram. What is the focal length of the lens? Answer to one decimal place.

Q10:

A convex lens is used to produce a real image, as shown in the diagram. Which of the points 𝐴 , 𝐡 , 𝐢 , 𝐷 , and 𝐸 is located at a distance from the lens that is equal to the lens’s focal length?

Q11:

The diagram shows the virtual image of an object produced by a concave lens.

Where in the diagram is the virtual image?

Where in the diagram is the object?

Q12:

Light from an object is incident on a convex lens, as shown. Which of the four diagrams ( 𝐴 ) , ( 𝐡 ) , ( 𝐢 ) , and ( 𝐷 ) most correctly shows how a real image of the object is formed by the lens?

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