सन् 1833 मे किसने प्रथम विद्द� – McqOptions

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1.	सन् 1833 मे किसने प्रथम विद्दुतीय टेलिग्राफ बनाया ?
A.	नील्स हेनरिक डेविड बोर
B.	टॉमस यंग
C.	विल्हेम वेलसर एंवकाल॔ फ्रेड्रिक गाउस
D.	हीडलबग॔
Answer» D. हीडलबग॔

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