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← ScienceWhich mechanism causes decreased observed frequency approaching a black hole?
A)Gravitational redshift stretches spacetime✓
B)Increased particle kinetic energy occurs
C)Hawking radiation overwhelms emissions
D)Quantum entanglement alters wavelengths
💡 Explanation
Gravitational redshift increases because spacetime is increasingly curved, stretching the wavelength of emitted photons. Therefore, frequency decreases near a black hole, rather than energy increases or novel radiation overwhelming normal emissions.
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