Light and Time... doesn't match

Light is emitted by matter which is at a speed lower than $c$ . Also, Light travels only at a speed $c=299792458$ m/s. Also, Acceleration $a=\frac{\Delta v}{\Delta t}$ . as Light can only travel at $c$ , light must achieve $c$ in $\Delta t=0$ . if $a=\frac{\Delta v}{0}$ then $a=\infty$ .Will it happen in this universe? or is there any medium in this universe? I request everyone to comment on this... Please Don't Ignore... Even if yours or my answer is wrong,comment on this...

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Comments

Your assumption that $\Delta t=0$ is right but you also assume that $\Delta v \neq 0$ which is not right. Actually $\Delta v$ is also equal to $0$ . This is because the initial and final speed are same and equal to $c$ .

Shubham Srivastava - 7 years, 8 months ago

how? Light is emitted by matter which is travelling at speeds below $c$ . So, if it wants to go at $c$ , a change of velocity must occur. so, $\Delta v\neq0$ .