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Which mechanism significantly alters light frequency near blackhole?

A)Gravitational redshift shifts towards red
B)Increased dispersion causes spectral blurring
C)Increased intensity enables Doppler compensation
D)Refraction induces spectral blue shifting

💡 Explanation

Gravitational redshift causes a frequency decrease because gravitational potential affects spacetime; the extreme curvature close to a black hole increases redshift. Therefore, light shifts towards red, rather than dispersive blurring arising from interfaces elsewhere.

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