If the temperature of the sun is doubled, the rate of energy received on the earth will be increased by a factor of?

اگر سورج کا درجہ حرارت دوگنا کر دیا جائے تو زمین پر حاصل ہونے والی توانائی کی شرح کس عنصر سے بڑھ جائے گی؟
Answer: 16
Explanation
  • The energy received from the sun on earth is proportional to the square of the temperature of the sun (Stefan-Boltzmann law). If the temperature of the sun is doubled, the energy received on earth will increase by a factor of 2^2 = 4. 
  • However, since the energy is also proportional to the square of the radius of the sun, and the radius remains constant, the total increase in energy received is 4^2 = 16.
  • So, if the temperature of the sun is doubled, the rate of energy received on earth will be increased by a factor of 16.
This question appeared in Past Papers (2 times)
Lecturer Physics Past Papers and Syllabus (1 times)
This question appeared in Subjects (1 times)
EVERYDAY SCIENCE (1 times)

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