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KCET 2020 Physics Solved Paper

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Question : 16

Total: 60

In Young’s Double Slit Experiment, the distance between the slits and the screen is 1.2 m and the distance between the two slits is 2.4 mm. If a thin transparent mica sheet of thickness 1 𝜇𝑚 𝑎𝑛𝑑 𝑅.𝐼. 1.5 is introduced between one of the interfering beams, the shift in the position of central bright fringe is

0.25 mm
2 mm
0.5 mm
0.125 mm

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