Physics, asked by neymar112, 1 year ago

if photons have zero mass then how is it effected by gravity

Answers

Answered by SonuRodgers12
0
We know that black holes exert a gravitational force on the objects. ... You are right that according to Newton's gravity, the force of gravity on particle that has 0 mass would be zero, and so gravity should not affect light.


neymar112: explain
SonuRodgers12: As an explanation of why a large gravitational field (such as a black hole) can bend light, I have heard that light has momentum. This is given as a solution to the problem of only massive objects being affected by gravity. However, momentum is the product of mass and velocity, so, by this definition, massless photons cannot have momentum.
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