- #1
opticaltempest
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I am stuck on a question regarding Young's Double Slit Experiment.
The two beams in Young's double slit experiment must
(a) be parallel
(b) have equal intensity
(c) come from the same source
(d) traverse equal distancesHere are my reasons for my answers. I may be misinterpreting certain parts to this question. Please help correct me on any misunderstandings. There is only one correct answer.
(a) FALSE - I can eliminate this answer because even if the two beams were shined slightly angled into the slits, only the parallel component of the beam would pass through the slit. We would just end up with less light entering the slit if the entering beams were not parallel.
(b) TRUE - I guess this answer is assuming that we are using two different sources of light. If we use two different sources and they are not the same intensity then the interference patterns might not appear correctly.
(c) FALSE - We could use two separate lasers. The light emitted from both lasers will be coherent. Even though the lasers may not have the same phase shift, we will still get an interference pattern as long as they have the same intensity.
(d) FALSE - The point of this experiment is to cause light to travel different distances which ends up causing a relative phase shift. This produces the cancellation of the light and creates the interference pattern.
Thanks
The two beams in Young's double slit experiment must
(a) be parallel
(b) have equal intensity
(c) come from the same source
(d) traverse equal distancesHere are my reasons for my answers. I may be misinterpreting certain parts to this question. Please help correct me on any misunderstandings. There is only one correct answer.
(a) FALSE - I can eliminate this answer because even if the two beams were shined slightly angled into the slits, only the parallel component of the beam would pass through the slit. We would just end up with less light entering the slit if the entering beams were not parallel.
(b) TRUE - I guess this answer is assuming that we are using two different sources of light. If we use two different sources and they are not the same intensity then the interference patterns might not appear correctly.
(c) FALSE - We could use two separate lasers. The light emitted from both lasers will be coherent. Even though the lasers may not have the same phase shift, we will still get an interference pattern as long as they have the same intensity.
(d) FALSE - The point of this experiment is to cause light to travel different distances which ends up causing a relative phase shift. This produces the cancellation of the light and creates the interference pattern.
Thanks