Light rays travel from one medium into another and refract toward the boundary. What changes about the light to cause this refraction?
A Its Frequency increases
B Its speed increases
C Its Frequency decreases
D Its speed decreases

Look at the illustration of four letters from the american manual alphabet. decide whether the description of the letter is a good definition. if not, choose a counterexample. the letter i is formed by sticking up the smallest finger and folding all the other fingers into the palm of your hand with the thumb folded over them while keeping your hand still.