Quiz8 B - Exam Image formation Optical instruments...

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Exam Image formation, Optical instruments, Intereference, Diffraction Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)Which of the following statements best states the principle which accounts for the phenomenon of interference? A)Interference requires that the two interacting waves be in phase. B)The necessary and sufficient condition for the interference of two waves is that they overlap in space and travel at the same velocity. C)When two or more waves overlap, the resultant displacement at any point and at any instant may be found by adding the instantaneous displacements that would be produced at the point by the individual waves if each were present alone. D)Since energy is conserved, for every region in which destructive interference occurs, there must be a corresponding region in which constructive interference occurs. 2)An optical engineer needs to ensure that the bright fringes from a double - slit are 15.7 mm apart on a detector that is 1.37 m from the slits. If the slits are illuminated with 633
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