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Which mechanism causes increased redshift from objects near blackholes?

A)Gravitational time dilation effect
B)Increased thermal Doppler broadening
C)Enhanced Hawking radiation emission
D)Photon blueshifting towards observer

💡 Explanation

Gravitational time dilation causes increased redshift because spacetime curvature near the black hole is extreme; therefore light appears redshifted as it loses energy escaping, rather than blueshifted because energy is lost in transit.

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