What characterizes refraction? a) A change in the direction of propagation. b) A change in the speed of propagation. c) A change in both the direct...
What characterizes refraction?
a) A change in the direction of propagation.
b) A change in the speed of propagation.
c) A change in both the direction and speed of propagation.
d) No change in the direction or speed of propagation.
a) A change in the direction of propagation.
b) A change in the speed of propagation.
c) A change in both the direction and speed of propagation.
d) No change in the direction or speed of propagation.
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Ed 
The correct answer is: c) A change in both the direction and speed of propagation.
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