Which of the following were one of the conclusions of the Michaelson – McqOptions

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1.	Which of the following were one of the conclusions of the Michaelson Morley experiment?
A.	All laws of physics remain invariant in all inertial frames
B.	Light propagates with different speeds in different directions
C.	Ether has no observable properties
D.	The velocity of light in free space is constant
Answer» D. The velocity of light in free space is constant

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