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Light and Optics Questions - All Grades

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Grade 9 Light and Optics
An object is placed 500 cm in front of a plane mirror. What happens when it is moved 50 cm closer to the mirror?
  1. The size of the image decreases.
  2. The size of the object increases.
  3. The size of the image is larger than the size of the object.
  4. The size of the image is the same as the size of the object.
Grade 3 Light and Optics
Water can be used to magnify.
  1. True
  2. False
Grade 1 Light and Optics
When light is pointed at a mirror it
  1. makes a rainbow.
  2. reflects.
  3. goes through it.
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 12 Light and Optics
What occurs when the angle of incidence of a light ray is greater than the critical angle?
  1. critical refraction
  2. total internal reflection
  3. total external reflection
  4. dispersion
Grade 8 Light and Optics
How does a white object appear to be white?
  1. It absorbs all colors of light
  2. It emits white light
  3. It reflects all colors of light
  4. It emits all colors of light
Grade 8 Light and Optics
Which type of reflection occurs when light waves strike a smooth and polished surface?
  1. Regular reflection
  2. Diffuse reflection
  3. Refractive reflection
  4. Irregular reflection
Grade 1 Light and Optics
Which gives off its own light?
  1. Moon Phase - Waning Crescent the Moon
  2. Summer - Sun the Sun
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 9 Light and Optics
A man can see near objects clear but distance objects blurred. What can be done to correct this condition of vision?
  1. Wearing glasses with concave lenses
  2. Wearing glasses with convex lenses
  3. Using a magnifying glass
  4. Using a telescope
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