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53. In Young's experiment using light ofwavelength 6000A°, fringe width obtainedat distance 2.5 m is 0.8 mm. If the entireapparatus is immersed in a liquid ofrefractive index 1.6, the fringe width willbe(A) 0.2 mmm(B) 0.4 mrm(C) 0.5 mm(D) 0.6 mm

Answer»

the correct option is (c)



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