Lesson T4.2.3
T4.2.3 Mirrors, pinhole cameras and lenses Quiz: KS3 Physics, Unit 4
20 questions
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Lesson T4.2.3, Mirrors, pinhole cameras and lenses: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 4: Waves, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
Which model of light is used to explain mirrors and pinhole cameras?
- Particle model
- Wave model
- Ray model
- Quantum model
-
Why is the image formed inside a pinhole camera upside down?
- Rays cross over
- Light slows down
- Lens bends light
- Rays bounce back
-
What type of image is always formed by a plane mirror?
- Inverted image
- Magnified image
- Real image
- Virtual image
-
A person stands 2 m in front of a plane mirror. How far is their image?
- 2 m
- 4 m
- 0 m
- 1 m
-
What do parallel rays of light do when passing through a convex lens?
- Scatter
- Converge
- Diverge
- Reflect
-
Which type of lens is thicker in the middle than at the edges?
- Concave lens
- Cylindrical lens
- Convex lens
- Plane lens
-
What forms the image on the back wall of a pinhole camera?
- A curved mirror
- A convex lens
- A tiny hole
- A glass prism
-
What effect does a larger pinhole have on an image in a pinhole camera?
- Brighter and sharper
- Dimmer and sharper
- Dimmer and blurrier
- Brighter and blurrier
-
What is the nature of an image formed by a plane mirror?
- Virtual and same size
- Real and magnified
- Real and inverted
- Virtual and smaller
-
What wave property causes a convex lens to focus light?
- Absorption
- Diffraction
- Refraction
- Reflection
-
What happens to image size in a pinhole camera if the object moves closer?
- It stays same
- It gets smaller
- It gets larger
- It disappears
-
What type of image is produced by a magnifying glass?
- Real inverted image
- Inverted virtual image
- Enlarged virtual image
- Small real image
-
What term describes the left-right reversal seen in a plane mirror?
- Refraction
- Lateral inversion
- Dispersion
- Magnification
-
Why does a pinhole camera not require a glass lens to form an image?
- Magnifies the rays
- Restricts ray overlap
- Bends light faster
- Absorbs extra light
-
What is the focal point of a convex lens?
- Ray convergence point
- Lens centre point
- Reflection boundary
- Light source location
-
What is the angle of reflection equal to?
- Critical angle
- Angle of incidence
- Angle of refraction
- Right angle
-
What do corrective eyeglasses use to focus light on the retina?
- Filters
- Mirrors
- Prisms
- Lenses
-
Which optical device forms an enlarged image using a convex lens?
- Projector
- Plane mirror
- Periscope
- Pinhole camera
-
What type of image can be projected onto a screen?
- Inverted image
- Reflected image
- Virtual image
- Real image
-
What does a convex lens do to parallel rays of sunlight?
- Scatter them
- Diverge them
- Reflect them
- Converge them
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