11th Class Physics Thermal Properties of Matter / द्रव्य के तापीय गुण Question Bank Thermal Properties of Matter Conceptual Problems

  • question_answer
    Why are clear nights colder than cloudy nights?                             

    Answer:

                    Clouds are opaque to heat radiations. So on a cloudy night, radiations from the earth's surface fail to escape. But on a clear night, the surface of the earth is cooled due to excessive radiation. So a clear night is colder than a cloudy night.


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