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Reflection of Light — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceReflection of Light2 Marks
Question
Why are concave mirrors used in solar devices?
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Answer

  • Solar devices like solar cooker or solar water heater use solar energy to cook food or heat water.
  • When sun rays fall on the concave mirror, they converge and come together in the focal plane.
  • Due to convergence, the intensity of sun rays increases and the food or water is heated faster. Hence, concave mirrors are used in solar- devices.

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