Generate a dark fringe at the identical location on screen

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Q. A tuning fork of unknown frequency is noted to be higher than one marked 512 hz and lower than one marked 1000 hz. You discover resonance points at .11 m and .53 m. Using 347 m/s for the speed of sound what is the frequency of the new fork?

Q. A double-slit experiment is set up using red light (λ = 706 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would produce a dark fringe at the identical location on the screen?

Reference no: EM1350176

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