Q49. In the set up shown in the Fig the two slits, S1 and S2 are not equidistant from the slit S. The central fringe at O is then:Physics — Optics, Nature of Light and Optical Instruments — Question 49 of 155A. Always brightB. Always darkC. Either dark or bright depending on the position of SD. Neither dark nor bright.Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →