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Answer is 45°

(1) √m1m2 (2) d/√m1-m2 (3) dm1m2/m1-m2 (4) d/m1-m2 correct answer is d/m1-m2 but how??

Like when i use 10x objective lens, scale bar shows value of 200 micrometer

fringes are produced with monochromatic

light of wavelength 550 nm. A thin plate of

glass (p. = F5) is placed in the path of one of

the interfering beams. The central band of

fringe system moves into position occupied

by the third bright band from the centre.

Calculate the thickness of the glass plate.

Given answer = 3 cm