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← ScienceWhich effect increases when observing astronomical objects near supermassive black holes?
A)Gravitational redshift of emitted light✓
B)Blue shift due to relative motion
C)Increase in apparent object luminosity
D)Decrease in observed spectral line width
💡 Explanation
The immense gravity near the black hole causes gravitational time dilation, because spacetime is highly curved in this region; therefore redshift increases, stretching the wavelength of emitted photons, rather than blueshift which compresses it under relative motion.
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