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
What is Atmospheric Refraction / वायुमंडलीय अपवर्तन क्या है:
The light from the Sun bends when it enters the Earth’s atmosphere due to the change in air density.
जब सूर्य का प्रकाश पृथ्वी के वायुमंडल में प्रवेश करता है, तो हवा की घनता बदलने के कारण यह मुड़ता है।
Effect on Sunrise and Sunset / सूर्योदय और सूर्यास्त पर प्रभाव:
Because of refraction, the Sun appears slightly higher in the sky than its actual geometric position.
इस कारण सूर्य पहले दिखाई देता है (sunrise advance) और सूर्यास्त देर से होता है (sunset delay)।
Why Not Rotation or Scattering / क्यों नहीं घूर्णन या प्रकीर्णन:
Earth’s rotation only determines the overall day and night cycle, it does not cause advance sunrise or delayed sunset.
Scattering of light affects the colour of the sky (like red/orange sunrise/sunset) but not the timing.
Extra Fact / अतिरिक्त तथ्य:
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.
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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