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

$\frac{1}{2}$

$\frac{8}{9}$

$\frac{9}{8}$

$\frac{17}{12}$

Correct answer is C

Ray travelling from water to glass;

$\frac{\text{speed of light in air}}{\text{speed of light in glass}}$ = $\frac{3}{2}$

= 3 x 108ms-1

X = 2 x 108ms-1

$\frac{\text{speed of light in air}}{\text{speed of light in water}}$ = $\frac{4}{3}$

= $\frac{3 \times 10^8}{g}$

Y = 2.25 x 108ms-1

from water to glass;

Refractive = $\frac{\text{speed of light in water}}{\text{speed of light in glass}}$

= $\frac{2.25 \times 10^8}{2.00 \times 10^8}$

= 1.125

= $\frac{9}{8}$

See all Physics questions & answers

See more JAMB questions & answers

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

Similar Questions

Aptitude Tests

The absolute refractive indices of glass and water are 32\frac{3}{2} and 43\frac{4}{3} respectively. The refractive index at the interface when a ray travels from water to glass is

Similar Questions

Aptitude Tests

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