PHYS 210 Final, Spring 2008

és One leg of a Michelson interferometer is moved slightly, such that 150 dark fringes sweep through the field . ELS! Suppose the light has a wavelength 480 nm, how far was the mirror moved in the leg? Choose one answer. a. 0.0036 mm x © b. 0.036 mm ¥ c. 0.0072 mm x d.0.072mm x e.0.36mm x £072mm x Correct Marks for this submission: 4/4. 23 A length of organ pipe is closed at one end. If the speed of sound is 344 m/s, what length of pipe (in cm) is needed to obtain a fundamental frequency of 50 Hz? Marks: 3 Choose one answer. a.172 x b. 28 x c. 688 x © d.172 y e. 86 x Correct Marks for this submission: 3/3.