13) Two beams of coherent light travel different paths arriving at point P. If the maximum destructive interference is t

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13 Two Beams Of Coherent Light Travel Different Paths Arriving At Point P If The Maximum Destructive Interference Is T 1 (617.14 KiB) Viewed 48 times

13) Two beams of coherent light travel different paths arriving at point P. If the maximum destructive interference is to occur at point P, the two beams must A) travel paths that differ by a whole number of wavelengths. B) travel paths that differ by an odd number of half-wavelengths. 14) At the first maxima on either side of the central bright spot in a double-slit experiment, light from each opening arrives A) in phase. B) 90° out of phase. C) 180° out of phase. D) none of the given answers 15) At the first minima on either side of the central bright spot in a double-slit experiment, light from each opening arrives A) in phase. B) 90° out of phase. C) 180° out of phase. D) none of the given answers 16) Ar the second maxima on either side of the central bright spot in a double-slit experiment, light from A) each opening travels the same distance. B) one opening travels twice as far as light from the other opening, C) one opening travels one wavelength of light farther than light from the other opening. D) one opening travels two wavelengths of light farther than light from the other opening. 17) In a Young's double slit experiment, if the separation between the slits decreases, what happens to the distance between the interference fringes? A) It decreases. C) It remains the same. B) It increases D) There is not enough information to determine, 18) In a double-slit experiment, it is observed that the distance between adjacent maxima on a remote screen is 1.0 cm. What happens to the distance between adjacent maxima when the slit separation is cut in hall? A) It increases to 2.0 cm. C) It decreases to 0.50 cm. B) It increases to 4.0 cm. D) It decreases to 0.25 cm. 19) One beam of coherent light travels path Pi in arriving at point Q and another coherent beam travels path P2 in arriving at the same point. If these two beams are to interfere destructively, the path difference P1 P2 must be equal to A) an odd number of half-wavelengths. C) a whole number of wavelengths. B) zero. D) a whole number of half-wavelengths. 20) If a wave from one slit of a Young's double slit experiment arrives at a point on the screen one-half wavelength behind the wave from the other slit, which is observed at that point? A) bright fringe B) dark fringe C) gray fringe D) multi-colored fringe 21) Why would it be impossible to obtain interference fringes in a double-slit experiment if the separation of the slits is less than the wavelength of the light used? A) The very narrow slits required would generate many different wavelengths, thereby washing out the interference pattern. B) The two slits would not emit coherent light. C) The fringes would be too close together. D) In no direction could a path difference as large as one wavelength be obtained, and this is needed if a bright fringe, in addition to the central fringe, is to be observed. 22) The separation between adjacent maxima in a double-slit interference pattern using monochromatic light is A) greatest for red light. C) greatest for blue light. B) greatest for green light. D) the same for all colors of light.