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The Order of Magnitude of the Background Radiation Intensity at the End

Question 40

Multiple Choice

The order of magnitude of the background radiation intensity at the end of the radiation-dominated era (10¹¹ s) was

A) 10⁹ W/m².
B) 10¹⁰ W/m².
C) 10¹¹ W/m².
D) 10¹² W/m².
E) 10¹³ W/m².

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