o00 T-Mobile LTE 1:23 AM capa8.phy.oh.o.edu Part 3: film- Constructive R The thi
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o00 T-Mobile LTE 1:23 AM capa8.phy.oh.o.edu Part 3: film- Constructive R The thickness of the film is 1½Afilm. film- Constructive The thickness of the film is 2Aflim- Submit Answer Incorrect. Tries 1/10 Previous Tries Part 4: The second thing that can happen is that a wave can be inverted when it reflects from a surface. This turns peaks into valleys and valleys into peaks. ince this has the equivalent effect of shifting the phase of the wave by 180° this is called a phase reversal. If this happens once, either when the light reflects from the top surface or when it reflects from the bottom surface, then the net effect would be to turn what would normally be constructive interference (if just looking at path length difference) into destructive interference and vice versa. If this happens at both surfaces, the effect cancels out and you ignore it. Determine whether the reflected light will interfere constructively with itself (bright) or destructively with itself (dark) the top surface but not the bottom surface the bottom surface but not the top surface. the bottom surface and at the top surface. Thickness-½Afilm, a phase reversal at Thickness-¼ 11m, a phase reversal at Thickness-½Afilm, a phase reversal at Submit Answer Tries 0/10 This discussion is closed. Send FeedbackExplanation / Answer
When light waves are in same phase then constructive interference take place while when light sabes are in out of phase then destructive interference will take place
in question 4.
1) both are in out of phase then interference is destructive
2) both are in out of phase then again destructive interference will take place
3) both are in same phase then constructive interference will take place.
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