,a light ray travels from glass to water the speed of light in glasss is 2*10^8m/s if the deepeness of - Science - Light

Question

,a light ray travels from glass to water the speed of light in
glasss is 2*10^8m/s if the deepeness of water is 400m then how much
time will it take

Neha Gupta · Accepted Answer

velocity in glass = 2×108 m/srefractive index of waterrefractive index of glass = velocity in glassvelocity in water1
331 5 =  2×108 vv = 2
25×108m/stime = depthv  = 400 2
25×108 = 177 7×10-8 = 17
77 nano second

,a light ray travels from glass to water the speed of light in glasss is 2*10^8m/s if the deepeness of water is 400m then how much time will it take