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     EduGorilla 
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    In Young’s double slit experiment, the central maxima occur where path difference between the interfering beams is zero. A glass plate of thickness 5 mm is inserted to cover the upper slit completely. The slit separation is 10 mm and the diffraction patterns are observed at the focal plane of the converging lens (focal length 35 mm). Which of the following statement on the position of the central maximum is true? Assume the refractive index of the glass is 2.5. 

    Options :-

    1. Central maxima will shift up by 5 mm

    2. The position of central maxima remains same.

    3. Central maxima will shift down by 15 mm

    4. None of these

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