Question

what will happen speed of light may become infinity

Answer 1

many things can be destroyed

Answer 2

The entire world would be Newtonian (more or less. Screw Quantum Mechanics, right?). ALL effects of relativity would be gone.How about time dilation?t′=limc→∞t1−v2/c2√=t1−v2/∞√=t1√=tt′=limc→∞t1−v2/c2=t1−v2/∞=t1=t Nope.How about length contraction? (Pretty much the same thing but oh well)L′=limc→∞1−v2/c2−−−−−−−−√L=1−v2/∞−−−−−−−−√L=1–√L=LL′=limc→∞1−v2/c2L=1−v2/∞L=1L=L Still Nope.That’s not even the worst part.Like most hypothetical questions on here, the answer in terms of the effect on us is simple.We all die.The reason is this - assuming the equations of General Relativity still hold, gravity would not exist.In GR, gravity is just the curvature of space-time. It is the effect of energy/matter on the space-time surrounding it. The equations governing the reaction of space-time to a matter-energy distribution is given by the Einstein equations:Gμν=8πGc3TμνGμν=8πGc3Tμν Fun fact, that’s actually 16 equations! (Many are redundant though.) The T term is the distribution of the mass/energy, called the Stress-Energy tensor. The G term on the left hand side of the equation is called the Einstein tensor, and dictates the curvature of space-time.Notice the problem though?If c→∞c→∞ , then the prefactor 8πGc3→0.8πGc3→0. The “new and improved” Einstein equations are:Gμν=(0)TμνGμν=(0)Tμν No matter what the matter distribution, the curvature of space-time is always zero.Gravity would no longer exist.The Earth would immediately break apart. Galaxies would disintegrate. Black holes would just not be a thing, at all (the Schwarzschild radius would go to zero).