1. Light of wavelength 550 nm is used to calibrate a Michelson interferometer. With the use of a micrometer screw, the platform on which one mirror is mounted is moved 0.180 mm. How many fringe shifts are counted?2. An interferometer is used to measure the length of a bacterium. The wavelength of the light used is 650 nm. As one arm of the interferometer is moved from one end of the cell to the other, 310 fringe shifts are counted. How long is the bacterium?

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A: So we have givenn=1.53 for lensn=1.32 for coating materialWe have to find the min thickness of the…

Q: 2. A film on a lens is 280 nm thick and is illuminated with white light (380nm-750nm). The index of…

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A: Given:Height of satellite aboove earth's surface, h = 160 kmfocal length of lens, f = 20…

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A: 91.97 nm

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A:

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A: Hence the answer..

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Q: 6. A beam from a krypton ion laser (1 = 461.9nm) falls on a single slit, producing a central maximum…

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A: solution is given by

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Q: 5. The Hubble Space Telescope with an objective diameter of 2.4 m, is viewing the Moon. Estimate the…

A: Given, Diameter of objective, D=2.4m Wavelength, λ=550nm

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.