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← ScienceWhich effect arises from the equivalence of gravity and acceleration inside a rapidly accelerating elevator?
A)Downward shift of light frequency✓
B)Upward shift of the elevator's mass
C)Decreased rate of radioactive decay
D)Contraction of the elevator length
💡 Explanation
Gravitational time dilation arises because acceleration bends spacetime equivalently to gravity, causing the frequencies emitted at the bottom of the elevator to appear lower. Therefore, light's frequency decreases rather than other effects, as the light climbs this 'gravitational' potential.
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