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. ...
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 ...
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? ...
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 ...
Measuring the Index of Refraction of Air
... gas or fluid which, effectively changes the optical path length. The change in optical path length can be calculated from the number of fringes displaced when the content of the cell is changed. The experiment has been used to calculate the geometry of the cell two within half a wavelength and to me ...
... gas or fluid which, effectively changes the optical path length. The change in optical path length can be calculated from the number of fringes displaced when the content of the cell is changed. The experiment has been used to calculate the geometry of the cell two within half a wavelength and to me ...
Physics 428 Light Syllabus Instructor:
... one and a half hours before and one and a half hours after the lectures ...
... one and a half hours before and one and a half hours after the lectures ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI
... Hydrogen lamp, Mercury Source, He –Ne Laser . 2. Red ray deviates more than yellow and green ray. Is it true? Why? 3. What for reflective and antireflective coatings used? 4. Two electromagnetic waves of amplitudes ‘a’ and ‘2a’ constructively interfere with each other. What is the Intensity of the r ...
... Hydrogen lamp, Mercury Source, He –Ne Laser . 2. Red ray deviates more than yellow and green ray. Is it true? Why? 3. What for reflective and antireflective coatings used? 4. Two electromagnetic waves of amplitudes ‘a’ and ‘2a’ constructively interfere with each other. What is the Intensity of the r ...
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.
