किस वष॔ क्रिस्टिआन हाइगें� – McqOptions

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1.	किस वष॔ क्रिस्टिआन हाइगेंस ने प्रकाश तरंग सिध्दांत को प्रस्तुत किया ?
A.	1670
B.	1678
C.	1679
D.	1683
Answer» C. 1679

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