Lesson 5.4.1
5.4.1 Converging and diverging lenses and ray diagrams Quiz: Pearson Edexcel Physics, Unit 5
20 questions
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Lesson 5.4.1, Converging and diverging lenses and ray diagrams: 20 multiple choice questions for the Pearson Edexcel Physics (9PH0), Unit 5: Waves and Particle Nature of Light, written with Revision Ninja.
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The 20 questions
-
What is the physical shape characteristic of a converging lens?
- Thinner in middle
- Thicker in middle
- Flat on both sides
- Uniform thickness
-
What type of image is always formed by a single diverging lens from a real object?
- Real and enlarged
- Virtual and diminished
- Real and diminished
- Virtual and enlarged
-
What distance defines the focal length of a thin converging lens?
- Radius of curvature
- Centre to object
- Centre to image
- Centre to focus
-
What happens to a light ray passing through the optical centre of a thin lens?
- It absorbs completely
- Refracts to focus
- It is undeviated
- It reflects backwards
-
Where does a ray parallel to the principal axis pass after leaving a converging lens?
- Perpendicular to axis
- Through optical centre
- Parallel to axis
- Through principal focus
-
Which feature correctly describes a real image formed by a lens?
- Always magnified
- Cannot be projected
- Always upright
- Can be projected
-
Which feature correctly describes a virtual image formed by a lens?
- Can be projected
- Always inverted
- Rays actually meet
- Cannot be projected
-
What type of image is formed 30 cm from a 10 cm focal length converging lens?
- Real and magnified
- Virtual and diminished
- Virtual and magnified
- Real and diminished
-
What type of image forms when an object is 6 cm from a 10 cm converging lens?
- Real and magnified
- Real and diminished
- Virtual and magnified
- Virtual and diminished
-
A converging lens of focal length 10 cm has an object placed 15 cm from it. How far from the lens is the image?
- 5.0 cm
- 6.0 cm
- 15 cm
- 30 cm
-
An object sits 30 cm from a diverging lens with focal length -20 cm. What is the image distance?
- -60 cm
- +60 cm
- -12 cm
- +12 cm
-
A converging lens forms an image with image distance 40 cm from an object at 20 cm. What is the magnification?
- 20
- 2.0
- 60
- 0.50
-
Where must an object be placed relative to focal length f for a converging lens to form a real, magnified image?
- Inside f
- At 2f
- Between f and 2f
- Beyond 2f
-
What are the characteristics of the image formed when an object is at 2f from a converging lens?
- Virtual and magnified
- Virtual and diminished
- Real and magnified
- Real, same size
-
Where is the image formed when an object is placed at the principal focus of a converging lens?
- At optical centre
- At infinity
- At focal point
- At 2f
-
Under what condition does a converging lens form a virtual image instead of a real image?
- Object inside f
- Object beyond 2f
- Object at 2f
- Object between f, 2f
-
An object is 25 cm from a converging lens of focal length 10 cm. What is the magnification of the image?
- 1.5
- 0.67, a diminished real image
- 2.5
- 0.40
-
A diverging lens of focal length -15 cm forms a virtual image 10 cm from the lens on the same side as the object. How far is the object from the lens?
- 10 cm
- 6.0 cm
- 30 cm
- 25 cm
-
Which type of image is always produced by a single diverging lens for a real object?
- Virtual and diminished
- Real and diminished
- Virtual and magnified
- Real and magnified
-
What is the minimum number of construction rays needed to locate an image point in a ray diagram?
- Three
- Four
- Two
- One
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