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3/28/17

posted Mar 28, 2017, 10:07 AM by Kristela Garcia   [ updated Mar 30, 2017, 10:02 AM ]
Videos: 



Activ Physics 01 Double Slit: 
Answer the following questions in a complete sentence in your notebook. Label this as a Double Slit Experiment. 
1. Describe the pattern on the screen. Describe brightness and spacing. 
2. Describe the effects of increasing slit spacing.  
3. Describe the effects of increasing wavelength. Is frequency increasing/decreasing?
4. Using the values of the program and the equation derived in class, show that the spacing is 0.77 mm for a 580 nm wavelength with a slit spacing of 3 mm. Everything needs to be converted to meters. 

5.  Fill out the chart below. Show your work, check with the simulation. 
 d L Wavelength y 
 2 mm 4 m 400 nm  ?
 ? 4m 680 nm  1.36 mm  
 2.3 mm 4 m ? 0.68 mm
 


    





Activ Physics 02 Single Slit: 

Answer the following questions in a complete sentence in your notebook. Label this as a Single Slit Experiment. 

1. Describe the pattern created by a single slit interference pattern. Include a sketch of the set up in your notes. 

2. How is a single slit pattern different from a double slit?

3. Describe the effects of Increasing the slit size. 

4. Describe the effects of increasing wavelength. 

5. Write this in your notes: 

For a single slit, the equation is the same : m(wavelength)=dsin(theta). 
The biggest difference: 
In a double slit problem the central maxima is labeled as m=0, and the next bright fringe is labeled m=1 (dark bands are multiples of m=0.5)

In a single slit the first DARK FRINGE is labeled m=1, and y is the distance from the central point to the dark fringe (also HALF the width of central max; bright spot), and d is the width of the one slit. 

Label your single slit pattern with m=1 and y
 d    wavelength L y width of max
 0.34 mm 600 nm 10 m ? ?
 ? 600 nm 10 m ? 25 mm
 0.29 mm ? 10 m ? 37.3 mm


For the problems below, show your work on a separate sheet of paper. 
Review for Single Slits:

Review for Double Slits:

Review for Refraction Problems:

Review for Lens Math (Same as Mirrors Math)

Just play with this interactive to help you see patterns in the different situations between Lenses and Mirrors

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