e is responsible for light spreading t princl . . ;?\\Sf}ilf pgsses glrough a narrow slit? A. refraction B. reflection G. olarization D. diffraction E. interference Ina single-slit diffraction experiment, the width " of the slit through which light passes is reduced. What happens t0 the central bright fringe? It stays the same. It becomes narrower. It becomes wider. We must know the wavelength of the light to answer. We must know the distance from the slit to the screen to anSwer. M oWk . An experiment is done using a green laser with a single slit and the diffraction pattern measured. If the green laser is replaced with a longer wavelength red laser, which of the following happens to the diffraction pattern? A. The central maximum broadens. B. The minima remain the same. C. You get double slit interference. D. The central maximum Narrows. E. The minima get closer together. _ Ifin a double-slit experiment the slit separation is increased, which of the following happens to the interference pattern shown on the screen? The maxima get closer together. The maxima stay at the same position. The minima and maxima stay at the same position. The minima stay at the same position. The maxima get further apart. By D> Interference of light is evidence supporting the wave theory of light. the wave theory except in the case of constructive interference. . the particle theory of light. the wave theory except in the case of destructive interference. Mmoo W both the particle and wave theories of light. Two beams of coherent light travel Qifferent paths arriving at point P. If the maximum constructive interference is to occur at point P, what should be the phase difference between the two waves? A. The phase difference between the two waves is T/4 (one-eighth wave). B. The phase difference between the two waves is T/2 (one-quarter wave). C. The phase difference between the two waves is 70 (one-half wave). D. The phase difference between the two waves is 2n (one full wave). Light of wavelength 610 nm is incident on a single slit 0.20 mm wide and the diffraction pattern is produced on a screenl that is 1.5 m from the slit. What is the width of the central maximum? (ie, the distance between the first- order minima.) A. 034cm B. 0.46cm C. 0.68 cm D. 092 cm E. 12cm . Light from a monochromatic source shines through a double slit onto a screen 5.0 m away. The slits are 0.18 mm apart. The bright bands on the screen are measured to be 1.7 cm apart. (ie, the distance between m=0 and m=1). What is the wavelength of the incident light? A. 457 nm B. 306 nm C. 392nm D. 612nm E. 784 nm What was the measured thickness of the hair you used to create a diffraction pattern? Thickness =