LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 4. In Newton’s rings experiment, the diameter of the 8th ring changes from 1.4cm to 1.27cm when a liquid is introduced between the lens and the plate. Calculate the refractive index of the liquid. 5. Define resolving power of an optical instrument. 6. Compare a zone plate and a convex lens. 7. What ...
... 4. In Newton’s rings experiment, the diameter of the 8th ring changes from 1.4cm to 1.27cm when a liquid is introduced between the lens and the plate. Calculate the refractive index of the liquid. 5. Define resolving power of an optical instrument. 6. Compare a zone plate and a convex lens. 7. What ...
Sample Problems for Final
... second, concave lens with a focal length of -9cm is placed 30cm to the right of the convex lens. Where is the image of the two-lens system relative to the second lens? Is the image real or virtual? Is it upright or inverted? What is the absolute value of its height? ...
... second, concave lens with a focal length of -9cm is placed 30cm to the right of the convex lens. Where is the image of the two-lens system relative to the second lens? Is the image real or virtual? Is it upright or inverted? What is the absolute value of its height? ...
diffraction and interference
... constructive and fully destructive. Can have anything from 0 to 4 times as bright ...
... constructive and fully destructive. Can have anything from 0 to 4 times as bright ...
Final Exam
... its mirrors (mirror 1 in Figure below) is moved by 25 µm, and it is observed that 89 fringe-pairs, bright and dark, pass by the detector during this process. Determine the wavelength of the light beam. ...
... its mirrors (mirror 1 in Figure below) is moved by 25 µm, and it is observed that 89 fringe-pairs, bright and dark, pass by the detector during this process. Determine the wavelength of the light beam. ...
Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, remote sensing, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, and velocimetry.Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. In analytical science, interferometers are used in continuous wave Fourier transform spectroscopy to analyze light containing features of absorption or emission associated with a substance or mixture. An astronomical interferometer consists of two or more separate telescopes that combine their signals, offering a resolution equivalent to that of a telescope of diameter equal to the largest separation between its individual elements.