I\'m not really sure what to do on c and d In the figure below (not to scale), l

Question

I'm not really sure what to do on c and d

In the figure below (not to scale), let L = 1.20 m and d = 0.150 mm and assume the slit system is illuminated with monochromatic 570-nm light.

In the figure below (not to scale), let L = 1.20 m and d = 0.150 mm and assume the slit system is illuminated with monochromatic 570-nm light. Calculate the phase difference between the two wave fronts arriving at P when ? = 0.500 degree Calculate the phase difference between the two wave fronts arriving at P when y = 5.00 mm. What is the value of ? for which the phase difference is 0.333 rad? What is the value of ? for which the path difference is ? / 4?

Explanation / Answer

a) pie = 2pi/5.7*10^-7 *1.50*10^-4*sin(0.500) = 14.43 rad

b) pie = 2*3.1415/5.7*10^-7 *1.5*10^-4 (5*10^-3/1.2) = 6.89 rad

c) theta = arcsin(5.7*10^-7*0.333/2*3.1415*1.5*10^-4 ) = 0.0115 degrees

d) theta = arcsin(lamda/4d) = arcsin(5.7*10^-7/4*1.5*10^-4) = 0.0544 degrees

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