The absolute refractive indices of glass and water are \(\frac{3}{2}\) and \(\frac{4}{3}\) respectively. The refractive index at the interface when a ray travels from water to glass is
\(\frac{1}{2}\)
\(\frac{8}{9}\)
\(\frac{9}{8}\)
\(\frac{17}{12}\)
2
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abeg when you're giving this just divide that of glass by that of water as it directly gives the the change of speed at that phase, so : 3/2 * 3/4 would give u ur beautiful 😍 ans which is 9/8
thank Google if you find this helpful but start with God first
myschool welldone, thanks for this, just that you guys need to correct some typographical errors in this ur solving because, it's not clear to some persons
Use the formula
n=speed in air ÷ speed in medium, To find the speed of the ray in glass and water.
Then calculate the speed in water÷speed in glass
