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← ScienceWhich mechanism causes gravitational redshift observed from white dwarfs?
A)Spacetime curvature near the compact object✓
B)Doppler shift from stellar rotation
C)Atmospheric absorption from stellar winds
D)Quantum entanglement with observed photons
💡 Explanation
Gravitational redshift occurs because spacetime curvature near a white dwarf causes photons to lose energy as they escape the strong gravitational field; therefore, their wavelengths increase. This redshift, rather than Doppler shift or absorption, is due to gravity.
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