Question

28. A monochromatic ray of light passes from air
to alochol. The wavelength of light in air is λ,
the speed of light in air is c and in alcohol is
v. If the absolute refractive index of alcohol is
1.36, (a) Write the relation between c and v.
(b) What is the wavelength of light in alcohol?​

Answer 1

Explanation:

According to Snell's Law:

n1 v 1 =n2v2

Refractive index of air is 1.0 thus, n1=1.0;

given refractive index of glass, n 2=1.5

Given: vvq=c; v 2 =v

Hence, applying the Snell's law:

1.0×c =1.5×v

⇒c=1.5v