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TEMPLE / Physics / PHYS 2022 / What is the net phase change for constructive inference?

What is the net phase change for constructive inference?

What is the net phase change for constructive inference?

Description

.lst-kix_tx6oe4xsroxt-7 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-7}ol.lst-kix_s7kbmubhalos-1.start{counter-reset:lst-ctn-kix_s7kbmubhalos-1 0}ol.lst-kix_jpc7cxuenl4u-7.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-7 0}.lst-kix_kh0wnpioq98i-7 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-7}ol.lst-kix_jpc7cxuenl4u-1.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-1 0}.lst-kix_9fxakfd5zhbi-1 > li:before{content:"◆ "}ol.lst-kix_kh0wnpioq98i-6.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-6 0}.lst-kix_9fxakfd5zhbi-2 > li:before{content:"● "}ol.lst-kix_70s75hfmxi3s-2.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-2 0}.lst-kix_9fxakfd5zhbi-0 > li:before{content:"➔ "}ol.lst-kix_tx6oe4xsroxt-0.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-0 0}.lst-kix_9fxakfd5zhbi-7 > li:before{content:"◆ "}ol.lst-kix_70s75hfmxi3s-7{list-style-type:none}ol.lst-kix_70s75hfmxi3s-8{list-style-type:none}.lst-kix_9fxakfd5zhbi-6 > li:before{content:"○ "}ol.lst-kix_70s75hfmxi3s-3{list-style-type:none}ol.lst-kix_70s75hfmxi3s-4{list-style-type:none}ol.lst-kix_70s75hfmxi3s-5{list-style-type:none}.lst-kix_9fxakfd5zhbi-3 > li:before{content:"○ "}.lst-kix_9fxakfd5zhbi-5 > li:before{content:"● "}ol.lst-kix_tx6oe4xsroxt-6.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-6 0}ol.lst-kix_70s75hfmxi3s-6{list-style-type:none}ol.lst-kix_70s75hfmxi3s-0{list-style-type:none}ol.lst-kix_70s75hfmxi3s-1{list-style-type:none}.lst-kix_9fxakfd5zhbi-4 > li:before{content:"◆ "}ol.lst-kix_70s75hfmxi3s-2{list-style-type:none}.lst-kix_s7kbmubhalos-1 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-1}ol.lst-kix_70s75hfmxi3s-8.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-8 0}.lst-kix_kh0wnpioq98i-5 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-5}.lst-kix_9fxakfd5zhbi-8 > li:before{content:"● "}.lst-kix_tx6oe4xsroxt-0 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-0,decimal) ". "}ul.lst-kix_9fxakfd5zhbi-1{list-style-type:none}ul.lst-kix_9fxakfd5zhbi-0{list-style-type:none}ul.lst-kix_9fxakfd5zhbi-3{list-style-type:none}ul.lst-kix_9fxakfd5zhbi-2{list-style-type:none}.lst-kix_jpc7cxuenl4u-0 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-0}ol.lst-kix_jpc7cxuenl4u-2.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-2 0}.lst-kix_tx6oe4xsroxt-1 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-1,lower-latin) ". "}.lst-kix_tx6oe4xsroxt-2 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-2,lower-roman) ". "}ul.lst-kix_9fxakfd5zhbi-5{list-style-type:none}ul.lst-kix_9fxakfd5zhbi-4{list-style-type:none}ul.lst-kix_9fxakfd5zhbi-7{list-style-type:none}.lst-kix_tx6oe4xsroxt-3 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-3,decimal) ". "}ul.lst-kix_9fxakfd5zhbi-6{list-style-type:none}ul.lst-kix_9fxakfd5zhbi-8{list-style-type:none}.lst-kix_jpc7cxuenl4u-2 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-2,lower-roman) ". "}.lst-kix_jpc7cxuenl4u-1 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-1,lower-latin) ". "}ol.lst-kix_70s75hfmxi3s-7.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-7 0}.lst-kix_jpc7cxuenl4u-0 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-0,upper-latin) ". "}ol.lst-kix_tx6oe4xsroxt-1{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-2{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-0{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-5{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-6{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-3{list-style-type:none}.lst-kix_kh0wnpioq98i-0 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-0}ol.lst-kix_tx6oe4xsroxt-4{list-style-type:none}.lst-kix_tx6oe4xsroxt-0 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-0}.lst-kix_tx6oe4xsroxt-3 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-3}ol.lst-kix_s7kbmubhalos-5{list-style-type:none}.lst-kix_tx6oe4xsroxt-5 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-5,lower-roman) ". "}ol.lst-kix_s7kbmubhalos-6{list-style-type:none}ol.lst-kix_s7kbmubhalos-3{list-style-type:none}ol.lst-kix_s7kbmubhalos-4{list-style-type:none}ol.lst-kix_s7kbmubhalos-1{list-style-type:none}ol.lst-kix_s7kbmubhalos-2{list-style-type:none}.lst-kix_tx6oe4xsroxt-4 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-4,lower-latin) ". "}.lst-kix_tx6oe4xsroxt-8 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-8,lower-roman) ". "}ol.lst-kix_s7kbmubhalos-0{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-1.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-1 0}.lst-kix_70s75hfmxi3s-0 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-0}.lst-kix_s7kbmubhalos-5 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-5}.lst-kix_s7kbmubhalos-8 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-8}.lst-kix_tx6oe4xsroxt-7 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-7,lower-latin) ". "}ol.lst-kix_s7kbmubhalos-7{list-style-type:none}.lst-kix_tx6oe4xsroxt-6 > li:before{content:"" counter(lst-ctn-kix_tx6oe4xsroxt-6,decimal) ". "}ol.lst-kix_s7kbmubhalos-8{list-style-type:none}.lst-kix_s7kbmubhalos-2 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-2,lower-roman) ". "}ol.lst-kix_tx6oe4xsroxt-7.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-7 0}.lst-kix_tx6oe4xsroxt-1 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-1}.lst-kix_s7kbmubhalos-0 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-0,decimal) ". "}.lst-kix_s7kbmubhalos-8 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-8,lower-roman) ". "}.lst-kix_s7kbmubhalos-6 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-6,decimal) ". "}ol.lst-kix_s7kbmubhalos-8.start{counter-reset:lst-ctn-kix_s7kbmubhalos-8 0}.lst-kix_kh0wnpioq98i-3 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-3}.lst-kix_s7kbmubhalos-4 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-4,lower-latin) ". "}.lst-kix_tx6oe4xsroxt-2 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-2}.lst-kix_jpc7cxuenl4u-2 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-2}.lst-kix_70s75hfmxi3s-7 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-7,lower-latin) ". "}ol.lst-kix_s7kbmubhalos-5.start{counter-reset:lst-ctn-kix_s7kbmubhalos-5 0}.lst-kix_s7kbmubhalos-4 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-4}.lst-kix_70s75hfmxi3s-7 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-7}ol.lst-kix_kh0wnpioq98i-5.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-5 0}.lst-kix_70s75hfmxi3s-3 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-3,decimal) ". "}.lst-kix_70s75hfmxi3s-5 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-5,lower-roman) ". "}.lst-kix_jpc7cxuenl4u-3 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-3,decimal) ". "}ol.lst-kix_70s75hfmxi3s-1.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-1 0}.lst-kix_70s75hfmxi3s-1 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-1,lower-latin) ". "}.lst-kix_jpc7cxuenl4u-5 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-5,lower-roman) ". "}.lst-kix_jpc7cxuenl4u-7 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-7,lower-latin) ". "}ol.lst-kix_tx6oe4xsroxt-5.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-5 0}ol.lst-kix_kh0wnpioq98i-8.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-8 0}.lst-kix_s7kbmubhalos-3 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-3}ol.lst-kix_s7kbmubhalos-6.start{counter-reset:lst-ctn-kix_s7kbmubhalos-6 0}ol.lst-kix_70s75hfmxi3s-4.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-4 0}.lst-kix_jpc7cxuenl4u-7 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-7}.lst-kix_jpc7cxuenl4u-1 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-1}.lst-kix_70s75hfmxi3s-2 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-2}ol.lst-kix_s7kbmubhalos-7.start{counter-reset:lst-ctn-kix_s7kbmubhalos-7 0}.lst-kix_70s75hfmxi3s-8 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-8}ol.lst-kix_kh0wnpioq98i-7.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-7 0}.lst-kix_kh0wnpioq98i-4 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-4}ol.lst-kix_jpc7cxuenl4u-0.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-0 0}ol.lst-kix_70s75hfmxi3s-3.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-3 0}ol.lst-kix_tx6oe4xsroxt-4.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-4 0}ol.lst-kix_kh0wnpioq98i-3.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-3 0}.lst-kix_70s75hfmxi3s-1 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-1}.lst-kix_tx6oe4xsroxt-8 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-8}ol.lst-kix_tx6oe4xsroxt-3.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-3 0}ol.lst-kix_jpc7cxuenl4u-4.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-4 0}.lst-kix_s7kbmubhalos-0 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-0}ol.lst-kix_70s75hfmxi3s-5.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-5 0}ol.lst-kix_kh0wnpioq98i-4{list-style-type:none}ol.lst-kix_kh0wnpioq98i-5{list-style-type:none}.lst-kix_jpc7cxuenl4u-8 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-8}ol.lst-kix_kh0wnpioq98i-2{list-style-type:none}ol.lst-kix_kh0wnpioq98i-3{list-style-type:none}ol.lst-kix_kh0wnpioq98i-8{list-style-type:none}ol.lst-kix_kh0wnpioq98i-6{list-style-type:none}ol.lst-kix_kh0wnpioq98i-7{list-style-type:none}.lst-kix_kh0wnpioq98i-8 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-8}.lst-kix_kh0wnpioq98i-4 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-4,lower-latin) ". "}.lst-kix_kh0wnpioq98i-6 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-6,decimal) ". "}.lst-kix_jpc7cxuenl4u-6 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-6}.lst-kix_kh0wnpioq98i-2 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-2,lower-roman) ". "}.lst-kix_kh0wnpioq98i-5 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-5,lower-roman) ". "}.lst-kix_70s75hfmxi3s-3 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-3}.lst-kix_kh0wnpioq98i-3 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-3,decimal) ". "}ol.lst-kix_tx6oe4xsroxt-2.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-2 0}ol.lst-kix_tx6oe4xsroxt-8.start{counter-reset:lst-ctn-kix_tx6oe4xsroxt-8 0}.lst-kix_kh0wnpioq98i-0 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-0,decimal) ". "}.lst-kix_kh0wnpioq98i-1 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-1,lower-latin) ". "}ol.lst-kix_s7kbmubhalos-3.start{counter-reset:lst-ctn-kix_s7kbmubhalos-3 0}ol.lst-kix_jpc7cxuenl4u-3.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-3 0}ol.lst-kix_70s75hfmxi3s-0.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-0 0}ol.lst-kix_kh0wnpioq98i-4.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-4 0}.lst-kix_kh0wnpioq98i-6 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-6}.lst-kix_tx6oe4xsroxt-6 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-6}ol.lst-kix_s7kbmubhalos-4.start{counter-reset:lst-ctn-kix_s7kbmubhalos-4 0}.lst-kix_s7kbmubhalos-2 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-2}.lst-kix_kh0wnpioq98i-8 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-8,lower-roman) ". "}ol.lst-kix_70s75hfmxi3s-6.start{counter-reset:lst-ctn-kix_70s75hfmxi3s-6 0}.lst-kix_kh0wnpioq98i-7 > li:before{content:"" counter(lst-ctn-kix_kh0wnpioq98i-7,lower-latin) ". "}.lst-kix_s7kbmubhalos-1 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-1,lower-latin) ". "}.lst-kix_s7kbmubhalos-6 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-6}.lst-kix_kh0wnpioq98i-2 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-2}.lst-kix_s7kbmubhalos-3 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-3,decimal) ". "}.lst-kix_jpc7cxuenl4u-3 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-3}.lst-kix_70s75hfmxi3s-6 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-6}.lst-kix_jpc7cxuenl4u-4 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-4}.lst-kix_s7kbmubhalos-7 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-7,lower-latin) ". "}.lst-kix_s7kbmubhalos-5 > li:before{content:"" counter(lst-ctn-kix_s7kbmubhalos-5,lower-roman) ". "}.lst-kix_70s75hfmxi3s-8 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-8,lower-roman) ". "}.lst-kix_70s75hfmxi3s-5 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-5}ol.lst-kix_tx6oe4xsroxt-7{list-style-type:none}ol.lst-kix_tx6oe4xsroxt-8{list-style-type:none}ol.lst-kix_kh0wnpioq98i-2.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-2 0}ol.lst-kix_jpc7cxuenl4u-5.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-5 0}.lst-kix_jpc7cxuenl4u-8 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-8,lower-roman) ". "}ol.lst-kix_s7kbmubhalos-2.start{counter-reset:lst-ctn-kix_s7kbmubhalos-2 0}.lst-kix_s7kbmubhalos-7 > li{counter-increment:lst-ctn-kix_s7kbmubhalos-7}.lst-kix_70s75hfmxi3s-6 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-6,decimal) ". "}.lst-kix_jpc7cxuenl4u-5 > li{counter-increment:lst-ctn-kix_jpc7cxuenl4u-5}.lst-kix_70s75hfmxi3s-4 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-4,lower-latin) ". "}.lst-kix_70s75hfmxi3s-4 > li{counter-increment:lst-ctn-kix_70s75hfmxi3s-4}.lst-kix_jpc7cxuenl4u-4 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-4,lower-latin) ". "}.lst-kix_70s75hfmxi3s-0 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-0,decimal) ". "}ol.lst-kix_jpc7cxuenl4u-8.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-8 0}.lst-kix_70s75hfmxi3s-2 > li:before{content:"" counter(lst-ctn-kix_70s75hfmxi3s-2,lower-roman) ". "}.lst-kix_jpc7cxuenl4u-6 > li:before{content:"" counter(lst-ctn-kix_jpc7cxuenl4u-6,decimal) ". "}ol.lst-kix_jpc7cxuenl4u-0{list-style-type:none}.lst-kix_tx6oe4xsroxt-4 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-4}ol.lst-kix_jpc7cxuenl4u-7{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-8{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-5{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-6{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-3{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-6.start{counter-reset:lst-ctn-kix_jpc7cxuenl4u-6 0}ol.lst-kix_jpc7cxuenl4u-4{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-1{list-style-type:none}ol.lst-kix_jpc7cxuenl4u-2{list-style-type:none}.lst-kix_tx6oe4xsroxt-5 > li{counter-increment:lst-ctn-kix_tx6oe4xsroxt-5}ol.lst-kix_kh0wnpioq98i-0{list-style-type:none}ol.lst-kix_kh0wnpioq98i-1{list-style-type:none}ol.lst-kix_kh0wnpioq98i-1.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-1 0}ol.lst-kix_s7kbmubhalos-0.start{counter-reset:lst-ctn-kix_s7kbmubhalos-0 0}.lst-kix_kh0wnpioq98i-1 > li{counter-increment:lst-ctn-kix_kh0wnpioq98i-1}ol.lst-kix_kh0wnpioq98i-0.start{counter-reset:lst-ctn-kix_kh0wnpioq98i-0 0}

C. A uniform thin film of alcohol n=1.36 lies on a flat glass plate (n = 1.56) when monochromatic light whose wavelength can be changed is incident normally, the reflected light is a minimum for ⋌ = 520nm and a maximum for ⋌ = 650nm If you want to learn more check out How does election in congress work?

Q: What is minimum thickness of film. If you want to learn more check out What is penicillinase?

If you want to learn more check out How can public health take the lead in mobilizing community?

For constructive Interference, the net phase changeWe also discuss several other topics like What is henry's law equation?

For destructive interference

Don't forget about the age old question of Why is culture communication important?

Then the thickness of film is

If you want to learn more check out How many variables are being studied in a correlational research?

32.11 Suppose a thin piece of glass is placed in front of the line lower slit in fig. so that the two waves enter the slits 180° out of phase in fig. Describe in detail the interference pattern on the screen.

 

Interpret - 180° phase shift produced by the glass Is equivalent to a path length of th ½ ⋌

  1. For constructive interference.

 

  1. For destructive interference on the screen.

Assess:

The pattern is just the reverse of the slit pattern. There will be a dark central line. Every place there was a bright fringe will now have a dark line and vice versa.

34.14 In a double slit experiment, the third order maximum for light of wavelength 500 nm is located 12mm from the central bright Spot on a screen 1.6m from the slits light of wavelength 650 nm is then projected through the same slits.

• How far from the central bright spot will the second order maximum of this light be located?

⋌1 = 500 nm                ⋌2 = 650 nm

x3 = 12 mm                x2 = ?

Interpret : For constructive interference ( angular)

 

Develop: , angular position + trig

2.

App for constructive interference

32.26 A lens appears to be greenish yellow ⋌ = 570 nm is strongest when white light reflects from it. What minimum thickness of coating (n=1.25) do you think is used on such a glass (n=1.52 lens and why? -

Represent: make a sketch.  

     

Interpret : The minimum non-zero thickness occurs

  1. For m=l → the path difference of one wavelength in the coating
  2. There is no net change in phase product produced by the two reflections
  3. Relationship between wavelength and index of refraction

Assess. Since the middle of the spectrum is being strongly reflected. The transmitted light will be stronger in the red and blue portions of the visible spectrum.

  • Pneumonic plague - infection of lungs, person to person Bubonic plague - transmitted by flea
  • Horizontal gene transfer-  spread cell to cell bacteria ta person etc .

Natural variation can be helpful in immunity

35.26 The nearest neighboring star to the sun is about 4 light years away. If the planet happened to be orbiting this star at an orbital radius equal to that of the Earth-Sun distance, what minimum diameter would an earth based telescopes aperture have to be in order to obtain an image that resolved this star and planet has a wavelength  of 550 nm.

  1. We find the angle subtended by the planet by dividing the orbital radius by the distance of the star to the length.
  2. By using Rayleigh criterion, we calculate the minimum diameter aperture needed to resolve this angle

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