बिजली का आविष्कार होने के � – InterviewSolution

1.	बिजली का आविष्कार होने के पूर्व प्रकाश के लिए किन-किन साधनों का प्रयोग किया जाता था।
Answer» बिजली का आविष्कार होने से पूर्व प्रकाश के लिए मशाल, दीपक, मोमबत्ती, लालटेन, लैम्प आदि का प्रयोग किया जाता था।

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