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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 27 - Wave Optics > A monochromatic beam of light fall on YDSE apparatus at some angle (say θ) as shown in figure. A thin sheet of glass is inserted in front of the lower slit s2. The central bright fringe (path difference =0) will be obtained

A monochromatic beam of light fall on YDSE apparatus at some angle (say θ) as shown in figure. A thin sheet of glass is inserted in front of the lower slit s2. The central bright fringe (path difference =0) will be obtained

Sources 1 and 2 emit lights of different wavelengths whereas sources 3 and 4 emit light of different intensities. The coherence