कौन सी घटना सितारों के वेग � – McqOptions

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1.	कौन सी घटना सितारों के वेग का अनुमान लगाने के लिए आवेदन किया जा सकता है?
A.	हस्तक्षेप
B.	डॉपलर प्रभाव
C.	बीट्स
D.	इन सब
Answer» C. बीट्स

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