34. Wave Optics

Young's Double Slit Experiment

Young's double slit introduction | Light waves | Physics | Khan Academy

Young's double slit Experiment explained

 In a two-slit experiment, laser light of wavelength  <math display=“inline”><mrow><mrow><mn>600</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">nm</mi></mrow></mrow></math> passes through a pair of slits separated by <math display=“inline”><mrow><mn>42</mn><mtext>&#x00A0;</mtext><mi>&#x03BC;</mi><mi mathvariant="normal" class="MathML-Unit">m</mi><mo>.</mo></mrow></math> If the observing screen is <math display=“inline”><mrow><mn>1</mn><mo>.</mo><mrow><mn>4</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></mrow></math> from the slits, what is the separation, in mm, between the bright fringes? 

 In a two-slit experiment, laser light of wavelength <math display="inline"><mrow><mn>600</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">nm</mi></mrow></math> passes through a pair of slits separated by <math display='inline'><mrow><mn>42</mn><mo rspace="thickmathspace">&#x2062;</mo><mo mathvariant="normal" class="MathML-Unit">&#x03BC;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></math>. If the observing screen is <math display="inline"><mrow><mn>1.4</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></math> from the slits, what is the separation, in mm, between the bright fringes? 

<p>A 450 nm laser shines light through a double slit of 0.2 mm separation. If a screen is placed 4 m behind the double slit, how wide are the bright fringes of the diffraction pattern?</p>

Unknown Wavelength of Laser through Double Slit

Thomas Young's Double Slit Experiment

Anderson Video - Double-Slit Interference Example

 A 532 nm laser illuminates a pair of slits separated by <math display=“inline”><mrow><mn>70</mn><mtext>&#x00A0;</mtext><mi>&#x03BC;</mi><mi mathvariant="normal" class="MathML-Unit">&#x00A0;m</mi></mrow></math>. What is the angular separation, in degrees, between the <math display=“inline”><mrow><mi>m</mi><mo>&#x003D;</mo><mn>1</mn></mrow></math> and <math display=“inline”><mrow><mi>m</mi><mo>&#x003D;</mo><mn>2</mn></mrow></math> bright fringes? 

 A <math display="inline"><mrow><mn>532</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">nm</mi></mrow></math> laser illuminates a pair of slits separated by <math display='inline'><mrow><mn>70</mn><mo rspace="thickmathspace">&#x2062;</mo><mo mathvariant="normal" class="MathML-Unit">&#x03BC;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></math>. What is the angular separation, in degrees, between the m = 1 and m = 2 bright fringes? 

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