Concept explainers
Observer A is looking at the part of the film that is 75 nm thick.
Consider two reflected rays that reach observer A, similar to the rays that you identified in part E of section II.
1. How much farther does one of these rays travel than the other in reaching observer A in mm?
2. What is the phase difference between these rays? (Be sure to take into account the phase of soap him changes that you identified in part C of section II as well as any phase difference due to path length difference.)
3. Is observer A looking at a region of maximum brightness, minimum brightness, or neither? Explain your reasoning.
Want to see the full answer?
Check out a sample textbook solutionChapter 11 Solutions
Tutorials in Introductory Physics
Additional Science Textbook Solutions
Essential University Physics: Volume 1 (3rd Edition)
Applied Physics (11th Edition)
Conceptual Physics (12th Edition)
Essential University Physics (3rd Edition)
University Physics with Modern Physics (14th Edition)
- Please use the picture provided to answer the following two questions: 1. are the two sources in phase or out of phase? Explain how you can tell from the diagram. if the two sources are out of phase, give the phase difference between the two sources. Explain. 2. What is the source separation, d, in terms of the wavelength lamda? Explain your reasoning.arrow_forwardPart A You have been asked to measure the width of a slit in a piece of paper. You mount the paper 80.0 centimeters from a screen and illuminate it from behind with laser light of wavelength 633 nanometers (in air). You mark two of the intensity minima as shown in the figure, and measure the distance between them to be 17.9 millimeters. (Figure 1) What is the width a of the slit? Express your answer in micrometers, to three significant figures. • View Available Hint(s) ? um Subrnit Part B If the entire apparatus were submerged in water, would the width of the central peak change? > View Available Hintís) Figure O The width would increase. O The width would decrease. O The width would not change. Submit -17.9 mm- Provide Feedbackarrow_forwardTwo light sources can be adjusted to emit monochromatic light of any visible wavelength. The two sources are coherent, 2.04 μm apart, and in line with an observer, so that one source is 2.04 um farther from the observer than the other. Part A For what visible wavelengths (400 to 700 nm) will the observer see the brightest light, owing to constructive interference? Express your answers in nanometers. Enter your answers in ascending order separated by commas. —| ΑΣΦ λ = Submit Part B λ = Submit What would your answers to part A be if the two sources were not in line with the observer, but were still arranged so that one source is 2.04 μ farther away from the observer than the other? Express your answers in nanometers. Enter your answers in ascending order separated by commas. Part C Request Answer X = VE ΑΣΦ ? Request Answer nm For what visible wavelengths will there be destructive interference at the location of the observer? Express your answers in nanometers. Enter your answers in…arrow_forward
- A. We again consider the photoelectric effect apparatus and will assume that the light source is on. Monochromatic light source Evacuated tube HA V 'В Let I, represent the ammeter reading with no battery in the circuit. 1. Is I1, the current when there is one battery in the circuit, greater than, less than or equal to Io? Explain. 2. A second battery is added in series with the first; both batteries have the same orientation. Rank I, I₁, and I₂ (the current when there are two batteries in the circuit) according to magnitude, from largest to smallest. Explain. 3. Suppose additional batteries were inserted in the same manner. Would the current increase with each addition? If so, is there a limit to the amount of current that can be produced? Explain. 4. Is it possible to use batteries to decrease the current? If so, show how to connect the batteries and sketch some possible paths of electrons. B 5. Could batteries be used to produce a constant clockwise flow of electrons (i.e., a…arrow_forwardFor each ray (#1-4) what is the total phase shift of the ray along the path just due to reflection or refraction at the interfaces. (Your answer will either be zero or pi. Don't need to include phase shift differences due to path length differences).arrow_forwardA simple cubic crystal is illuminated with X- ray of wavelength 0.09 nm at a glance angle. The crystal is rotated and the angles at which Bragg reflection occurs are measured. 1. Which set of crystal plane will give the smallest angle for first - order reflection? Explain in details your answer. 2. If this angle is 8.9°, determine the spacing between these planes. 3. At what angle will first-order reflection be obtained from the (110) crystal planes? Will there be any higher order reflection from this plane?arrow_forward
- Answer part D and E 1) A sound wave of wavelength 20 cm is split into two equal parts that later recombine at the ear of the observer, as shown in the figure. a) Initially, the upper path is the same length as the lower path, such that r2 – r1 = 0. At this point, is the interference between the two sound waves constructive, destructive, or something in between? b) Now the sliding section is moved up by 5 cm (which extends path r2 by twice that). Is the interference between the two sound waves constructive, destructive, or something in between? c) Next the sliding section is moved up by an additional 2.5 cm. Is the interference between the two sound waves constructive, destructive, or something in between? d) How does the observed sound intensity compare between parts (a), (b), and (c)? Rank situations a, b, and c from loudest to quietest. e) From this point, how much farther would you have to move up the sliding section to reach the next minimum intensity situation?arrow_forwardLight of wavelength 510 nm illuminates a double slit, and the interference pattern is observed on a screen. Part A At the position of the m= 4 bright fringe, how much farther is it to the more distant slit than to the nearer slit? Express your answer using three significant figures and include the appropriate units. Ar = O μÅ Value Units ?arrow_forwardFor an aperture of width 1mm and using light of wavelength of 633 nm, estimate the distance from the aperture at which the Faunhofer approximation would be appropriate. a. Under the Fraunhofer condition, what would be the angle of the first minimum? b. If the screen is 1m away, how far from the central maximum would the first minimum be located?arrow_forward
- . Two separate coherent sources with distance produce identical sound waves of wavelength 2.0 [m] that are in phase. Source 1 is at the (0, 0) and Source 2 is at (6.0 [m], 0). If an observer stands at (6.0 [m], 8.0 [m]) in front of the sources, what will be the path difference and how would the sound waves interfere at that point? O A. 1.0 m, constructively OB. 2.0 m, constructively O C. 1.0 m, destructively O D. 2.0 m, destructivelyarrow_forwardA toy racecar races along a circular track. The racecar starts at the 6-o'clock position and travels in the CCW direction, and is always 6 feet from the center of the race track. Imagine an angle with an initial ray pointing in the 6 o'clock direction and with a terminal ray passing through the racecar. (Draw a diagram of this!) Let 0 represent the angle's measure. a. Write an expression (in terms of 0) that represents the measure of the angle with an initial ray pointing in the 6 o'clock direction and with a terminal ray passing through the racecar. Preview b. Write a formula that expresses the car's horizontal distance to the right of the center of the race track in feet, h, in terms of 0. h Preview с. If0 3.1 radians then the car is how many feet to the right of the center of the race track? feet Preview Submitarrow_forwardUnpolarized light with intensity I 0 is incident on an ideal polarizing fiter. The emerging lipht strkes a second ideal polarizing fiter whose axis is at 380 ∘ to that of the frist. Determine the intensity of the beam after it has passed through the second polarizer Express your asnwer as a multiple of intensity I 0 . Part B Determine its state of polarization The inght is ineatly polarized along the axis of the first fiter The ught is inearfy polarized along the aus of the second fiter The light is inearly polarized perpencicular to the avds of the second fiter. The loht is inearly posarized perpendcular to the avs of the first fiter. No gpt please,hand written pleasearrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON