Which of the following is true?
Which of the following is true?
निम्नलिखित में से कौन – सा कथन सत्य हैं?
Detailed Solution & Logic
Advanced sunrise and delayed sunset is due to atmospheric refraction./ अग्रिम सूर्योदय तथा विलंबित सूर्यास्त वायुमंडलीय अपवर्तन के कारण होता है।
Explanation / व्याख्या
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What is Atmospheric Refraction / वायुमंडलीय अपवर्तन क्या है:
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The light from the Sun bends when it enters the Earth’s atmosphere due to the change in air density.
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जब सूर्य का प्रकाश पृथ्वी के वायुमंडल में प्रवेश करता है, तो हवा की घनता बदलने के कारण यह मुड़ता है।
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Effect on Sunrise and Sunset / सूर्योदय और सूर्यास्त पर प्रभाव:
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Because of refraction, the Sun appears slightly higher in the sky than its actual geometric position.
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इस कारण सूर्य पहले दिखाई देता है (sunrise advance) और सूर्यास्त देर से होता है (sunset delay)।
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Why Not Rotation or Scattering / क्यों नहीं घूर्णन या प्रकीर्णन:
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Earth’s rotation only determines the overall day and night cycle, it does not cause advance sunrise or delayed sunset.
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Scattering of light affects the colour of the sky (like red/orange sunrise/sunset) but not the timing.
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Extra Fact / अतिरिक्त तथ्य:
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Due to atmospheric refraction, the Sun can be seen about 2–3 minutes earlier at sunrise and 2–3 minutes later at sunset than its actual geometric position.
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वायुमंडलीय अपवर्तन के कारण सूर्य वास्तविक स्थिति से सूर्योदय में लगभग 2–3 मिनट पहले और सूर्यास्त में 2–3 मिनट बाद दिखाई देता है।
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