The 1st ever merger of black hole of different masses was observed by – McqOptions

MCQOPTIONS

1.	The 1st ever merger of black hole of different masses was observed by Laser Interferometer Gravitational Wave Laboratory. And the study was published by ______________ .
A.	ArXiv
B.	MedRxiv
C.	PhyRxiv
D.	SocRxiv
E.	None of these
Answer» B. MedRxiv

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