1.

The refractiveindex of glass w.r.t. amedium is 4/3 . IfV_m-V_g=6.25 xx 10^(7) m//s , then the velocity of light in the medium will be

Answer»

` 2.5 xx 10^(8) m//s `
`2.25 xx 10^(8) m//s `
`1.875 xx10^(8) m//s `
`1.5xx10^(8) m//s `

Solution :`""_(m) n_(G)=(V_(m))/(V_g)=(4)/(3) :. V_m=(4)/(3)V_g`
`:. V_m-V_g=V_g((4)/3-1)=(V_g)/(3)`
`:. (V_g)/(3)=6.25 xx 10^(7)`
`:. V_g=1.875 xx 10^(8) m//s `
`V_m=(4)/(3)V_g=2.5 xx 10^(8) m//s `


Discussion

No Comment Found

Related InterviewSolutions