Question

what is the speed of light in a transparent medium of refractive index of 1.7​

Answer 1

n=c/v

n=refractive index of the medium

c=speed of light in vaccum

v=speed of light in the medium

1.7=3*10^8/v

v=1.76*10^8m/s

hope this helps you out

Answer 2

refractive index =speed of light in

vacuum/

speed of light in

required medium

i.e} v=1.76×10^8