1.

Two coherent sources S1 and S2 are separated by a distance four times the wavelength l of the source. The sources lie along y axis whereas a detector moves along + x axis. Leaving the origin and far off points the number of points where maxima are observed is

A. 2
B. 3
C. \[0.34{}^\circ \] 
D. 5
Answer» C. \[0.34{}^\circ \] 


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