find ratio of speed of gamma ray and microwave in glass Share with your friends Share 0 Ved Prakash Lakhera answered this Speeds of gamma ray and micro wave in air or in vaccum is c =3×108m/s.The refractive index of glass μ=1.4.So the speed of microwave in glass=v=cμ=3×1081.4So the ratio of the velocity of gamma ray to microwave velocity=3×1083×1081.4 =1.4 1 View Full Answer Gunjan answered this It will be 1 only. Since both of them are em waves 0