Superposed_Cat
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Hi all, I was wondering if, when a beam of light is pulled towards a black hole , because it can't accelerate, it is blueshifted? Thanks in advance.
Light Entering Black Hole: Hawking Radiation Explained
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Hi Superposed_Cat! 
If two people with identical flashlights are stationary at the top and bottom of a mountain, shining the flashlights at each other,
the top person will see the light redshifted, and the bottom person will see the light blueshifted.
It's the same for stationary observers near a black hole …
the gravitational effect of a black hole is (outside the event horizon and outside the surface of the star) exactly the same as that of a star of the same mass.
If two people with identical flashlights are stationary at the top and bottom of a mountain, shining the flashlights at each other,
the top person will see the light redshifted, and the bottom person will see the light blueshifted.
It's the same for stationary observers near a black hole …
the gravitational effect of a black hole is (outside the event horizon and outside the surface of the star) exactly the same as that of a star of the same mass.
Superposed_Cat
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Thanks tiny-tim :). Good day fine sir.