Lesson T4.2.4
T4.2.4 The eye and light energy Quiz: KS3 Physics, Unit 4
20 questions
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Lesson T4.2.4, The eye and light energy: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 4: Waves, written with Revision Ninja.
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The 20 questions
-
Which part of the eye contains light-sensitive cells?
- Retina
- Cornea
- Pupil
- Iris
-
What is the main function of the lens in the human eye?
- Reflecting light
- Absorbing light
- Generating light
- Focusing light
-
Which part of the eye controls the amount of light entering?
- Cornea
- Optic nerve
- Retina
- Iris
-
What type of image is initially formed on the retina?
- Virtual image
- Magnified image
- Upright image
- Inverted image
-
What are light energy signals converted into by the retina?
- Magnetic fields
- Thermal energy
- Sound waves
- Electrical signals
-
What are the two types of light-detecting cells in the retina?
- Rods and cones
- Corneas and lenses
- Nerves and muscles
- Pupils and irises
-
Why does the pupil become larger in dim light conditions?
- To cool the eye
- To block out dust
- To focus the lens
- To admit more light
-
Which part of the eye acts like a digital camera sensor?
- Sclera
- Lens
- Pupil
- Retina
-
Which transparent part at the front of the eye bends light?
- Pupil
- Retina
- Cornea
- Optic nerve
-
What energy transfer occurs when light reaches a solar cell?
- Kinetic to potential
- Chemical to thermal
- Sound to light
- Light to electricity
-
What is photo-sensitive material in cameras used for?
- Recording images
- Magnifying lenses
- Producing power
- Reflecting light
-
Where must light from an object reach for us to see it?
- The iris
- The cornea
- The pupil
- The retina
-
What form does light energy take after use in plant photosynthesis?
- Chemical energy
- Nuclear energy
- Thermal energy
- Kinetic energy
-
Which eye change helps a person focus on a close object?
- Lens thickens
- Lens flattens
- Pupil widens
- Iris shrinks
-
What is the correct order for light travelling into the human eye?
- Lens, retina, cornea, pupil
- Retina, lens, pupil, cornea
- Pupil, cornea, retina, lens
- Cornea, pupil, lens, retina
-
What is the role of the optic nerve in vision?
- Focuses the light
- Produces the image
- Carries signals to brain
- Changes pupil size
-
Which part of the eye changes shape to focus on near and far objects?
- The cornea
- The pupil
- The iris
- The lens
-
What does the brain do with electrical signals sent from the retina?
- Amplifies voltage
- Interprets as sight
- Stores as memory
- Converts to sound
-
What are the light-sensitive cells in the retina that detect colour?
- Neurons
- Corneas
- Rods
- Cones
-
What is the main function of the iris in the human eye?
- Detects colour
- Focuses light
- Controls pupil size
- Produces tears
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