# The coherent point sources S_(1) and S_(2) vibrating in same phase emit light of wavelength lambda. The separation between the sources is 2lamb

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The coherent point sources S_(1) and S_(2) vibrating in same phase emit light of wavelength lambda. The separation between the sources is 2lambda. Consider a line passingh through S_(2) and perpendicular to the line S_(1)S_(2). What is the smallest distance from S_(2) where a minimum of intensity occurs due to interference of waves from the two sources?
A. (7lambda)/(12)
B. (15lambda)/(4)
C. (lambda)/(2)
D. (3lambda)/(4)`

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Correct Answer - A