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Question
Refraction occurs for both sound and light. When refraction occurs there is a change in1) frequency.
2) wavelength.
3) speed.
4) all of the above.
When sound travels faster near the ground than above, bending of sound tends to be
5) upward.
6) downward.
7) neither of these.
Answer
This answer is hidden. It contains 3 characters.
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