#8 Interference phenomena Coherent light strikes a two slit arrangement, and alt
ID: 1731738 • Letter: #
Question
#8 Interference phenomena Coherent light strikes a two slit arrangement, and alternating bright and dark fringes are produced on a screen far from the slits. The bright fringes are due to the fact that O A. The path lengths of rays coming from the slits differ by half a wavelength. O B. The path lengths ofrays coming from the slits differ by a full wave length. C. The path lengths of rays coming from the slits differ by one and a half wavelengths. D. The path lengths of rays coming from the slits differ by two and a half wavelenghts. #9 Interference phenoinena Coherent light strikes a two slit arrangement, and alternating bright and dark fringes are produced on a screen far from the slits. The dark fringes are due to the fact that 0 A. The path lengths of rays coming from the slits differ by half a wavelength. O B. The path lengths of rays coming from the slits differ by a full wavelength. imu from the slits are identical.Explanation / Answer
8)
for bright fringe,
path difference = n*wavelength
where n can be 0,1,2,3….
for dark fringe,
path difference = (n+1/2)*wavelength
where n can be 0,1,2,3….
Answer: B
9)
Answer: A
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