Question

Which of the following is included in laws of refraction?

• A. $\frac{sini}{sinr}=\mu$
• B. The incident ray, the refracted ray and normal at the point of incidence all lie in the same plane
• C. $\angle i=\angle r$, where $r$ is angle of refraction
• D. $\angle i<\angle r$, where $r$ is angle of refraction

Answer 1

Answer: (A), (B)

The correct options are
A $\frac{sini}{sinr}=\mu$
B The incident ray, the refracted ray and normal at the point of incidence all lie in the same plane

Laws of refraction of light includes:

1) Snell's law: When light is passing from one medium to other medium the ratio of sine of angle of incidence to sine of angle of refraction is equal to a constant, which is called the refractive index of second medium w.r.t first medium.

2)Incidence ray, refracted ray, and the normal at the point of incidence all lie in the same plane.