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Qus: ‘वीडियो टेप’ का आविष्कार किया था
Qus'Video tape' was invented by
A. रिचर्ड जेम्स ने
B. चार्ल्स गिन्सबर्ग ने
C. पी.टी. फन्स्व र्थ ने
D. जार्जेस द मेस्ट्राल ने
Solution
B. by Charles Ginsberg
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