SAT Subject Physics Practice Question 305: Answer and Explanation
1. The diagram below shows a set of open-ended pipes with waves vibrating inside them.
Which of the diagrams shows the pipe containing waves with the longest wavelength?
Correct Answer: B
The correct answer is (B). There is only 1/2 of a wave shown in the pipe. The wave is 4 times longer than the pipe in which it is vibrating. The equation for finding the length of the pipe is