Answer
The speed of light in the diamond is $1.24\times 10^8~m/s$
Work Step by Step
We can find the speed of light in the diamond:
$v = \frac{c}{n}$
$v = \frac{3.0\times 10^8~m/s}{2.4168}$
$v = 1.24\times 10^8~m/s$
The speed of light in the diamond is $1.24\times 10^8~m/s$
