Standing Sound Waves: The lowest tone to resonate in a pipe of length L that is closed at one end but open at the other end is 200 Hz. Which one of the following frequencies will not resonate in that pipe?
A. 200 Hz
B. 400 Hz
C. 600 Hz
D. 1000 Hz
E. 1400 Hz
Answer: B
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What wavelength monochromatic source in the visible region (390 to 710 nm) can be used to constructively reflect off a soap film (n = 1.46) if the film is 214 nm thick?
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