A stick inserted in water looks crooked. this is due to ?

(A) Reflection

(B) refraction

(C) Reflection and refraction

(D) None of these

Standing waves are produced by _________.

A. Reflection

B. Refraction

C. Interference

D. None of these

Using a ray diagram, please illustrate partial reflection and partial refraction fro a ray passing from pair into water at an angle of 15 degrees. on the diagram please lable  the normal line, index of refraction, the angle of incidence and reflection and refraction.

Can an image formed by one reflecting or refracting surface serveasan object for a second reflection or refraction? Does itmatterwhether the first image is real of virtual? Explain.