Pre-Lab QuestionsIf a ray of light hits two slits what pattern would you expect to 4777- CoachOnCouch

PHYS 253 Physics Lab for Engineers

Question.4777 - Pre-Lab QuestionsIf a ray of light hits two slits, what pattern would you expect to see on the wall? What pattern would you expect to see if light behaves as a wave? Explain your answers.Predict the pattern of light projected on a wall for light sent through a single slit on a piece of aluminum as a opposed to a double slit. Draw your prediction and explain your reasoning.A laser with a wavelength of 650 nm passes through a double slit. A pattern is observed on a wall that is 1.5 meters away from the slits. The spacing between 10 bright fringes is measured to be 3 cm. What is the separation between the slits? Show your work.Experiment 1: youngâs double slit experimentData SheetTable 1: Double Slit Experimental DataWavelength (nm)Distance From Foil to Wall (m)Number of Bright SpotsDistance Between First and Last Bright Spot (m)Post-Lab QuestionsDid the patter of light projected on the wall match your prediction from Pre-Lab Question 3?What is the significant scientific discovery uncovered by the result of this experiment? Relate your answer to Youngâs Double Slit Experiment.All waves must travel through a medium. If light has wavelike properties, what is the medium through which it travels? Explain your reasoning.As long as the distance to the wall is much greater than the separation of the slits, the spacing between the bright spots is uniform. Using data from Table 1, calculate the distance between two bright spots. Show your work.How close together were you able to make your slits? Hint: calculate d.How would changing the color of light from red to green affect the pattern projected on the wall? Explain your answer.The pattern projected on the wall from the light of a red laser is not observed when white light from a light bulb is sent through the slits. Explain why white light doesnât produce a fringe pattern.A diffraction grating is like a double slit except it contains a large number of equally parallel slits. What would you predict the differences would be in the pattern projected on the wall?Experiment 2: single slit diffractionData SheetTable 2: Single Slit Experiment DataWidth of Center Peak (cm)Width of Slit for a Single PeakPost-Lab QuestionsDid your prediction in Pre-Lab Question 2 match the single slit experimental results? Explain any differences.How did a change in the width of the slit affect the diffraction pattern?Calculate the width of the slit that caused the diffraction pattern using the equation:where a is the width of the slit. Show your work.Use the results of this experiment to explain why you can hear, but not see someone who is standing outside the door if you are standing right around the corner of the doorway. If you shined the light through a door, would you observe a diffraction pattern? Why or why not?

Answer Below:

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x m x m x m xxxxxxxxxxxx young x double xxxx experimentData xxxxxxxxxx Double xxxx Experimental xxxxxxxxxxxxxx nm xxxxxxxx From xxxx to xxxx m xxxxxx of xxxxxx Spots xxxxxxxx Between xxxxx and xxxx Bright xxxx m xxxxxxxx QuestionsDid xxx patter xx light xxxxxxxxx on xxx wall xxxxx your xxxxxxxxxx from xxxxxxx Question xxx the xxxxxxxx interference xxxxxx pattern xxxxxxx the xxxxxxxxxx of xxxxxx spaced xxxxxx fringes xxxxxxxxxx with xxx wave xxxxxx of xxxxx What xx the xxxxxxxxxxx scientific xxxxxxxxx uncovered xx the xxxxxx of xxxx experiment xxxxxx your xxxxxx to xxxxx s xxxxxx Slit xxxxxxxxxx Young x experiment xxxxxxxxx the xxxx theory xx light xxxxxxxxx that xxx light xxxxxxxxx interference x property xxxxxxxxxxx to xxxxx as xx challenges xxx Newtonian xxxxxxxxxxx theory xxx laid xxxxxxxxxxxx support xxx quantum xxxxxxxxx where xxxx particle xxxxxxx of xxxxxxx is xxxxxxx All xxxxx must xxxxxx through x medium xx light xxx wavelike xxxxxxxxxx what xx the xxxxxx through xxxxx it xxxxxxx Explain xxxx reasoning xxx light xx an xxxxxxxxxxxxxxx wave xxx does xxx require x medium xx it xxxxxxxxxx through xxxxxxxxxxx electric xxx magnetic xxxxxx in x vacuum xxxxxx mechanical xxxxx sound xxxx require x material xxxxxx the xxxxxxxxxx notion xx aether xxx disproven xx the xxxxxxxxx Morley xxxxxxxxxx As xxxx as xxx distance xx the xxxx is xxxx greater xxxx the xxxxxxxxxx of xxx slits xxx spacing xxxxxxx the xxxxxx spots xx uniform xxxxx data xxxx Table xxxxxxxxx the xxxxxxxx between xxx bright xxxxx Show xxxx work x - xxxx close xxxxxxxx were xxx able xx make xxxx slits xxxx calculate x d x y x - xxxxx would xxxxxxxx the xxxxx of xxxxx from xxx to xxxxx affect xxx pattern xxxxxxxxx on xxx wall xxxxxxx your xxxxxx Green xxxxx has x shorter xxxxxxxxxx nm xxxx red xxxxx since xxxxxx spacing x a xxxxxxx wavelength xxxxxx narrower xxxxxxx hence xxx fringes xxxx closer xxxxxxxx The xxxxxxx projected xx the xxxx from xxx light xx a xxx laser xx not xxxxxxxx when xxxxx light xxxx a xxxxx bulb xx sent xxxxxxx the xxxxx Explain xxx white xxxxx doesn x produce x fringe xxxxxxx White xxxxx contains xxxx wavelengths xxxx wavelength xxxxxxxx its xxx interference xxxxxxx with x different xxxxxx spacing xxxxxxx the xxxxxxxx to xxxxxxx and xxxx out xxxxxxxxx in x blurred xx indistinct xxxxxxx maximum x diffraction xxxxxxx is xxxx a xxxxxx slit xxxxxx it xxxxxxxx a xxxxx number xx equally xxxxxxxx slits xxxx would xxx predict xxx differences xxxxx be xx the xxxxxxx projected xx the xxxx A xxxxxxxxxxx grating xxxxxxxx much xxxxxxx and xxxx narrowly xxxxxxx maxima xxx the xxxxxxx separation xxxxxxx maxima xx greater xxxxxxxxx resolution xxxxx the xxxxxxxxx is xxxx increased xxx to xxxxxxxxxxxx interference xxxxxx many xxxxx Experiment xxxxxx slit xxxxxxxxxxxxxxx SheetTable xxxxxx Slit xxxxxxxxxx DataWidth xx Center xxxx cm xxxxx of xxxx for x Single xxxxxxxxxxxx QuestionsDid xxxx prediction xx Pre-Lab xxxxxxxx match xxx single xxxx experimental xxxxxxx Explain xxx differences xxx the xxxxxxx maximum xxx significantly xxxxx than xxxxx in xxx double-slit xxxxx and xxxxxxxxx fringe xxxx dimmer xxxxxxxxxx with xxxxxxx principle xxx the xxxxxxxxxxx condition xxx did x change xx the xxxxx of xxx slit xxxxxx the xxxxxxxxxxx pattern x narrow xxxx produces x wider xxxxxxxxxxx pattern xxxxxxx of xxx inverse xxxxxxxxxxxx between xxxx width xxx angular xxxxxx Sin x a xx the xxxx widthCalculate xxx width xx the xxxx that xxxxxx the xxxxxxxxxxx pattern xxxxx the xxxxxxxx where x is xxx width xx the xxxx Show xxxx work xxxxxxx peak xxxxx cm xxxxxxxxx to xxxxxx m x - xxxxx angle xxx first xxxxxxx tan- xxxx radUsing x sin x sin x - xxx - x mmUse xxx results xx this xxxxxxxxxx to xxxxxxx why xxx can xxxx but xxx see xxxxxxx who xx standing xxxxxxx the xxxx if xxx are xxxxxxxx right xxxxxx the xxxxxx of xxx doorway xxxxx wave xxx longer xxxxxxxxxx m xxxxxxxx them xx diffract xxxxxx obstacles xxxxx light xxx wavelengths xx the xxxxx of xxxxxxxxxx resulting xx negligible xxxxxxxxxxx at xxxxxxxx scale xxxx doors xxxxx you xxx hear xxx not xxx around xxx corners xx you xxxxxx the xxxxx through x door xxxxx you xxxxxxx a xxxxxxxxxxx pattern xxx or xxx not xx a xxxxxxx is xxxx wider xxxx the xxxxxxxxxx of xxxxxxx light xxxxxxx to xxxx small xxxxxxxxxxx angles xxxxx the xxxxx passes xxxxxxx with xxxxxxx diffraction xxx no xxxxxxxxxx fringe xxxxxxx forms