एक बिजली के बल्ब की अपेक्षा एक 'फ्लोरेसेन्ट ट्‌यूब' को अधिमान (preferred) दिया जाता है‚ क्योंकि-

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Uttar Pradesh UPPSC Previous Papers - General Studies Paper 1 2009 (Hindi) — practice the complete quiz, review flashcards, or try a random question.

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एक बिजली के बल्ब की अपेक्षा एक 'फ्लोरेसेन्ट ट्‌यूब' को अधिमान (preferred) दिया जाता है‚ क्योंकि-

उपर्युक्त में से कोई नहीं
इसमें प्रकाश प्रसारित/विकीर्ण करने हेतु अधिक बाह्य सतह होती है
वोल्टेज के उतार-चढ़ाव का प्रभाव इस पर नहीं पड़ता
ट्‌यूब में इलेक्ट्रिकल ऊर्जा लगभग पूर्ण रूप से प्रकाश में परिवर्तित हो जाती है

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