A Micheison interferometer is set up such that the mirror at the end of one of the arms is attached to a device which is positioning the wires inside a particle physics detector. The device then moves slightly and it is observed that the pattern of fringes is now inverted i.e. where there was a bright fringe there is now a dark one. If the wavelength of light in the interferometer is 51? nm what is the minimum distance that the device could have moved? Answer: Onm Opm Omm Om Check A Michelson interferometer, as shown below, is set up and a series of bright fringes is observed. A thin piece of transparent material with a refractive index of 1.53 is then placed into one of the arms of the interferometer such that the light passes through the full thickness of the sample. This causes the fringe pattern to shift such that where there was a bright fringe there is now a dark fringe. If the wavelength of light used in the interferometer is 527 nm what is the smallest possible value for the thickness of the sample? Mirror Compensating Plate Half-silvered Laser Mirror Mirror Screen Answer: Choose... +The interference phenomenon known as Newton's rings has many applications in the field of optics. Suppose a convex lens with radius of curvature R is placed {curved side down) on a at glass surface, and illuminated from above with monochromatic light of wavelength A = 534 nm. When you measure the ring pattern. you find that the radius of the ftieth bright ring is 3.6 mm. Use this information to determine the radius of curvature of the lens. Hint: you will want to use an equation derived in the video. Answer: Choose... Check A soap film (index of refraction 1.33) is surrounded on both sides by air. When white light shines nearly perpendicularly on the film, you see bright interference colours of wavelength = 675 nm in the reflected light. What is the second smallest possible value for the thickness of the film? Answer: Choose... + CheckConsider the Newton's rings experiment shown on the left. A convex lens with a spherical surface rests on a flat pane of glass. It is illuminated from above with monochromatic light. resulting in the interference pattern shown on the right. {a} Would the pattern Change if you were to use a shorter wavelength of light? Clearly state what change{s} would occur (if any] and briefly explain why {b} The apparatus is surrounded by air. Would the pattern change if it were immersed in water instead? Clearly state what change{s] would occur (if any}, and briefly explain why. light : K { U! y... W E E 93MB u]