What will be the amount of a photon on the event horizon of a black hole?

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I think before knowing the answer, you should also know the main reason for the answer.

Before understanding what the amount of a photon will be in the event horizon, we must know the true meaning of the event horizon. An event horizon is formed when an object of a much larger mass changes space-time (space-time). They are mainly related to black holes because they have very high mass. The change in space-time caused by a black hole affects something like the picture below.

This change in space-time explains the effect of gravity. Here the black hole forms the event horizon which is a region of extreme gravity. Anything (even light) of this much cannot go back here.

Now come to the question, the question is that if the photon particles of light reach this event horizon, what will be the difference in its value. Before understanding this, we have to understand the anatomy of black holes. The top view of the black hole is given in the picture below. This is called the Schwarzchild Black Hole Anatomy. There are two such anatomy images. One for the rotating black hole and one for the non-rotating. The bottom is for non-rotating black holes. There is no black hole that does not rotate, but the anatomy of the black hole is easier to understand than this picture.

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The singularity of the black hole is given in the middle of the picture. This is followed by the Schwarzchild region in black. This is the region that is inaccessible to anything. Meaning this is the place where light does not reach even after going inside the black hole. The white part outside it is called Photon sphere, this is the place where particles of light reach. When the particles of light cannot reach the Schwarzchild region, they start moving around it. Which makes the photon circle. The escape velocity inside this sphere is higher than the speed of light.

Meaning you must have understood that when a particle of light enters a black hole, it is not an Absorb but travels around the Schwarzchild region.

The image above was for a non-rotating black hole. But every black rotates for which there are 2 photon spheres. But let's see him later.

A photon that enters a blazing hole will still rotate the Schwarzchild region at the speed of light. Its volume will still be the same as anywhere and in a vacuum.