- #1

denniszhao

- 15

- 0

- Homework Statement
- I have no idea how to start with this problem. I am trying to look for all the incident angles, refraction and reflection angles. And i don't know what the two radii are doing with y.

- Relevant Equations
- critical angle = arcsin (n2/n1)

snell's law for refraction: n1sin(theta1)=n2sin(theta2)

**Homework Statement:**I have no idea how to start with this problem. I am trying to look for all the incident angles, refraction and reflection angles. And i don't know what the two radii are doing with y.

**Homework Equations:**critical angle = arcsin (n2/n1)

snell's law for refraction: n1sin(theta1)=n2sin(theta2)

A cup with refractive index n2= 1.8 has outer radius b= 6.0 cm and inner radius a= 4.0 cm. It is filled with a liquid with refractive index n3= 1.3. In the surrounding medium with n1= 1.0, a ray of

light travels along a trajectory that is at a perpendicular distance y from the center of the cup. The ray enters the cup and, reaching the liquid interface at the critical angle, undergoes total internal reflection.