CBSE Class 10th Science
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Questions and Answers

What is the phenomenon that causes the formation of a rainbow when light is refracted, reflected, and dispersed in water droplets?

  • Dispersion (correct)
  • Reflection
  • Refraction
  • Diffraction

    • What type of lens is used to correct the condition of myopia (nearsightedness)?

  • Bifocal lens
  • Cylindrical lens
  • Concave lens (correct)
  • Convex lens

    • What is the speed of light in a vacuum?

  • 400,000,000 meters per second
  • 200,000,000 meters per second
  • 300,000,000 meters per second
  • 299,792,458 meters per second (correct)

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