Concept explainers
A plate of glass
Light of frequency
In this problem, ignore reflections from the top surface of the glass plate and the bottom surface of the plastic.
- Are the plates in contact at point A (where the plate appears dark) or at point B (where the plate appears bright)? Explain your reasoning.
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Tutorials in Introductory Physics
- X rays of wavelength 0.0820 nm are scattered from the atoms of a crystal. The second-order maximum in the Bragg reflection occurs when the angle is 20.5°. (Figure 1) For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of X-ray diffraction. Part A What is the spacing between adjacent atomic planes in the crystal? Express your answer in nanometers. ΓΙ ΑΣΦ d = Submit Previous Answers Request Answer ? nmarrow_forwardTwo flat plates of glass with parallel faces are on a table, one plate on the other. Each plate is 11.2 cm long and has a refractive index of 1.55. A very thin sheet of metal foil is inserted under the end of the upper plate to raise it slightly at that end, in a manner similar to that pictured in the figure (Figure 1). When you view the glass plates from above with reflected white light, you observe that, at 1.10 mm from the line where the sheets are in contact, the violet light of wavelength 410 nm is enhanced in this reflected light, but no visible light is enhanced closer to the line of contact. Figure 1 of 1 Part A How far from the line of contact will green light (of wavelength 540 nm) first be enhanced? Express your answer in millimeters. —| ΑΣΦ ¤ green, 1 = Submit Part B Corange, 1 = Request Answer Submit How far from the line of contact will orange light (of wavelength 610 nm) first be enhanced? Express your answer in millimeters. 15. ΑΣΦ Request Answer Part C Complete…arrow_forwardLight of intensity I, is polarized vertically and is incident on an analyzer rotated at an angle 0 from the vertical. Find the angle 0 if the transmitted light has intensity I = (0.750)I, I = (0.500)I, I = (0.250)I, and I = 0. (Enter your answers in degrees.) HINT (a) I= (0.750)I. (b) I = (0.500)I. (c) I = (0.250)I. (d) I = 0 Need Help? Read Itarrow_forward
- Problem 5: A diffaction grating is illuminated with coherent (laser) light with wavelength darrow_forwardThere are two categories of ultraviolet light. Ultraviolet A (UVA) has a wavelength ranging from 320 nm to 400 nm. It is necessary for the production of vitamin D. UVB, with a wavelength in vacuum between 280 nm and 320 nm, is more dangerous because it is much more likely to cause skin cancer. Part A Find the frequency range of UVA. Enter the minimum and maximum values of the range. Enter your answers in hertz separated by a comma. 15| ΑΣΦ fmin, fmax = Submit Part B fmin. fmax = Submit Find the frequency range of UVB. Enter the minimum and maximum values of the range. Enter your answers in hertz separated by a comma. 195| ΑΣΦ Part C kmin, Kmax = Request Answer Part D Request Answer Submit Request Answer ? Kmin, kmax= What is the range of the wave numbers for UVA? Enter the minimum and maximum values of the range. Enter your answers in radians per meter separated by a comma. 17| ΑΣΦ ? Hz ? Hz ? What is the range of the wave numbers for UVB? Enter the minimum and maximum values of the…arrow_forwardTwo point sources (S₁ and S₂) emit in light phase with wavelength 600 nm and same amplitude. A detector P is shown on the x-axis, which extends through the source S₁. the phase difference between the light arriving at P from each of the two sources is registered to the. As P is shifted indefinitely right along the x axis from x = 0. The result is displayed in the graph below, whose horizontal scale is not specified. In this situation, answer the two questions below, starting with (I) (I) How many minimum intensity are detected by P? 1, 2, 3, 4, 5, 6, 7 or 8? (II) What is the position of the penultimate minimum intensity detected by P?: (A)40,5 μm(B)21,5 μm(C)1,05 μm(D)71,5 μm(E)6,75 μmarrow_forwardA beam of monochromatic light with a wavelength of 500 nm is directed through an absorber having 5 equally narrow slits separated by 20 um between adjacent slits. The resulting diffraction pattern is observed on a screen that is perpendicular to the direction of light and 5 m from the slits. The intensity of the central maximum is 1.3 W/m2. Calculate the distances from the central maximum to the first and second principal maxima respectively. on the screen A. 8 cm and 25 cm B. 8 cm and 12 cm C. 12.5 cm and 25 cm D. 25 cm and 9.2 cm E. 9.2 cm and 23 cmarrow_forwardWrite down an expression for the width of the central bright line on a screen in the single slit diffraction experiment in terms of the diffraction slit (without the quotes) for products (e.g. width d, the distance from the slit to the screen D and the wavelength of light A. Consider D>> d. Please use "*" B*A), "/" for ratios (e.g. B/A) and the usual "+" and "-" signs as appropriate. For exponents (e.g. A²) use A*A or A^2 notation: thus A³/B should appear as either A*A*A/B or A^3/B. For greek letters use "theta" (without the quotes) and for trigonometric functions use "cos", "tan", "sin" (without the quotes). Thus for Acose use A* cos theta. Please use the "Display response" button to check you entered the answer you expect. Answer: Display responsearrow_forwardIn the figure, two radio-frequency point sources S1 and S2, separated by distance d = 2.4 m, are radiating in phase with A = 0.6 m. A detector moves in a large circular path around the two sources in a plane containing them. How many maxima does it detect? Number i Unitsarrow_forwardFor the picture below, determine the displacement of the light ray when the incident angle is 25°. The glass slab (? = 1.4) is 0.050 m thickarrow_forwardCoherent light with an unknown wavelength passes through two very narrow slits with a separation d = 0.011 mm, and the interference pattern is observed on a screen a distance of L = 3.00 m from the slits. The third-order bright fringe is formed at a angle of 9.81 °relative to the incident light. Part A - Find the wavelength of the light. The unit is nm, 1 nm = 109 m. Keep 1 digit after the decimal point. 15| ΑΣΦ xa Xb 0/0 A= 5.68 107 ● √x √x 18arrow_forwardMirror M, in the figure below is moved through a displacement AL. During this displacement, 240 fringe reversals (formation of successive dark or bright bands) are counted. The light being used has a wavelength of 634.8 nm. Calculate the displacement AL. 39.6 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. µm A single ray of light is split into two rays by mirror M, which is called a beam splitter. Light source The path difference between the two rays is varied with the adjustable mirror M1. M1 Telescope Mo As M1 is moved, an interference M2 pattern changes in the field of view. Need Help? Read It Master Itarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_iosRecommended textbooks for you
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