Question

the refractive index of transparent material is 3/2. the speed of light in that medium is

Answer 1

Answer:

N21=C/v

N2/N1=C/veda

N2=3/2

N1=1 -------- (refractive Index of vaccum)

C=3×10^8m/s

V = ?

3/2/1=3×10^8/v

V=2×10^8m/s

Hence the speed in vacuum is 2×10^8m/s

Explanation: we knowledge tht ratio of refractive Index of medium 2 to that of vacuum of ratio of velocity of light in vacuum to that of velocity in medium

Answer 2

2×10^8 m/s

Explanation:

we know that,

u=c÷v

so,

3÷2=3×10^8÷2

so,v =2×10^8m/s