A

Admin • 833K Points
Coach

Q. Which among the given parts of the sunlight makes the solar cooker hot

  • (A) Red light
  • (B) Ultra violet
  • (C) Infra red
  • (D) Cosmic rays
  • Correct Answer - Option(C)
  • Views: 18
  • Filed under category Physics
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Explanation by: Admin

Solar cookers work by trapping heat energy from the sun, primarily from infrared (IR) radiation.

  • Infrared rays carry heat energy, which gets absorbed by the black surface inside the cooker, raising the temperature and cooking the food.

Why are the other options incorrect?

  • (A) Red Light → ❌ Visible light (including red) is not responsible for heating.
  • (B) Ultraviolet (UV) → ❌ UV rays have high energy but do not contribute significantly to heat.
  • (D) Cosmic Rays → ❌ Cosmic rays are high-energy particles from space, unrelated to solar heating.

Thus, infrared radiation is responsible for making the solar cooker hot.

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