Which of these is a result of gravitational lensing? O the formation of multiple images of the same object
O the bending of light in an accelerating reference frame
O the curvature of space-time

Answer is the formation of multiple images of the same object .

Explanation:

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luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.