Physics and Chemistry Fundamentals› Fundamental Physics: Forces, Particles, Relativity and Gravitational Waves
What would happen to earth if the sun suddenly disappears ? A. The earth immediately experiences the lack of sun light. B. The earth experiences the lack of sun light after about eight minutes. C. The earth immediately experiences the lack of gravitation. D. The earth experiences the lack of gravitation after about eight minutes. Choose the correct answer :
Answer d.
Option d: Both sunlight and changes in the gravitational field propagate at the speed of light. At the Earth–Sun distance, the delay is approximately 1.5 × 10^11 ÷ 3 × 10^8 = 500 seconds, or eight minutes twenty seconds; the scenario is hypothetical.
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