The angle of refraction of the ray of monochromatic light is 30.3⁰.
How to calculate the angle of refraction?
The angle of refraction is calculated by applying Senil's law as follows;
n₁ sin (θ₁) = n₂ sin (θ₂)
Where;
- n₁ is the refractive index of the first medium (air)
- θ₁ is the angle of incidence,
- n₂ is the refractive index of the second medium (the liquid),
- θ₂ is the angle of refraction
The angle of refraction is calculated as;
n₁ sin (θ₁) = n₂ sin (θ₂)
1 x sin (45) = 1.4 sin (θ₂)
sin (θ₂) = sin (45) / 1.4
sin (θ₂) = 0.505
θ₂ = arc sin (0.505)
θ₂ = 30.3⁰