Coherent red light is incident on a mask with four narrow slits a distance d apa
ID: 2077216 • Letter: C
Question
Coherent red light is incident on a mask with four narrow slits a distance d apart. a. What is the smallest value of delta s_adj that would correspond to a minimum for this case? b. Which integer multiples of this value of delta s_adj would correspond to other minima? Which would not? c. Which values of delta s_adj would correspond to principal maxima? d. How many minima would there be between adjacent principal maxima? Generalize your results from the 2-slit and 3-slit cases (in tutorial), and the 4-slit case (question above) to determine the smallest value of delta s_adj that would correspond to a minimum for the case of N identical, evenly-spaced slits.Explanation / Answer
1. A . Sadj = /4
b. Sadj = m /4 except m= o,4,8,.......
c. Sadj = m as before m = 0,1,2....
d 3 minima
2 Sadj = /N , total of N-1 minima