Want to see correct answers?
Login or join for free!
  Physics Worksheets
Looking for Physics worksheets?
Check out our pre-made Physics worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 8 questions. View questions in All Grades.

Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8 Grade 9 Grade 11 Grade 12 College

Browse Questions

Eighth Grade (Grade 8) Light and Optics Questions

You can create printable tests and worksheets from these Grade 8 Light and Optics questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 2 of 14 Next
Grade 8 Light and Optics
What happens when light bounces off an object and strikes a mirror?
  1. The object disappears
  2. The light is reflected again
  3. The mirror absorbs the light
  4. The light is refracted
Grade 8 Light and Optics
The                       occurs when light strikes on rough or uneven surfaces?
  1. Regular reflection
  2. Diffuse reflection
  3. Specular reflection
  4. Absorptive reflection
Grade 8 Light and Optics
Farsightedness can usually be corrected by                .
  1. convex lenses
  2. convex mirrors
  3. concave mirrors
  4. concave lenses
Grade 8 Light and Optics
Which of the following has the higher frequency?
  1. Visible light waves
  2. X-rays
  3. Radio waves
  4. Gamma rays
Grade 8 Light and Optics
Which part of the eye contains photoreceptor cells called rods and cones?
  1. Cornea
  2. Pupil
  3. Retina
  4. Optic nerve
Grade 8 Light and Optics
In which optical devices are convex lenses commonly used to focus real images?
  1. Telescopes
  2. Binoculars
  3. Eyeglasses
  4. All of the above
Grade 8 Light and Optics
                is formed in a plane mirror.
  1. Real image
  2. Virtual image
  3. Inverted image
  4. Enlarged image
Grade 8 Light and Optics
Which type of mirror is commonly used in rearview mirrors of vehicles to provide a broader field of view?
  1. Plane mirror
  2. Concave mirror
  3. Convex mirror
  4. Diverging mirror
Grade 8 Light and Optics
What causes the phenomenon where images in mirrors are reversed horizontally?
  1. Refraction
  2. Dispersion
  3. Reflection
  4. Diffraction
Grade 8 Light and Optics
Incandescent light sources emit a significant amount of                  .
  1. Sound
  2. thermal energy
  3. visible light
  4. ultraviolet light
Grade 8 Light and Optics
Why does a red apple appear red?
  1. Because it emits red light
  2. Because it absorbs all colors of light
  3. Because it reflects red light and absorbs all other colors
  4. Because it contains red pigments
Grade 8 Light and Optics
During diffuse reflection, the light rays                             .
  1. maintain a uniform direction
  2. bounce back predictably
  3. scatter in various directions
  4. emit their own light
Grade 8 Light and Optics
What is the law of incidence in reflection?
  1. The angle of incidence is equal to the angle of reflection
  2. The angle of incidence is greater than the angle of reflection
  3. The angle of incidence is smaller than the angle of reflection
  4. The angle of incidence is unrelated to the angle of reflection
Grade 8 Light and Optics
What is the key difference between infrared waves and microwaves?
  1. Infrared waves have shorter wavelengths and higher frequencies than microwaves.
  2. Infrared waves have longer wavelengths and lower frequencies than microwaves.
  3. Infrared waves cannot penetrate materials.
  4. Infrared waves are used for cooking food.
Grade 8 Light and Optics
What are the key properties of microwaves?
  1. Their ability to produce visible light
  2. Efficient energy transfer to heat and inability to penetrate materials
  3. Their ability to penetrate materials and efficient energy transfer to heat
  4. Their ability to reflect off surfaces
Previous Page 2 of 14 Next