InterviewSolution
| 1. | An expression of snell's law from denser medium to rarer medium29) sihr> sin3) sini sinră) si | 
| Answer» When light travels from adenser mediumto ararer medium, it bends away from the normal, as illustrated to the left. This behavior follows fromSnell's Law. As you saw before, the larger angle must be in themediumhaving the lower index ofrefraction If light travels from one medium with refractive index ni and incident angle i, to another medium with refractive index nr and refraction angle r, then the relationship is described by Snell's Law as such:nisin(i)=nrsin(r) which can be rewritten like this:sin(i)/sin(r)=nr/ni The case where light travels from a denser to rarer medium, then the only change would be that now ni>nr in which case the above equation would yield the index of refraction of the rarer medium in relation to the denser medium. (a) sini > sinr is correct option | |