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Physics-

General

Easy

Question

A YDSE is conducted in water ( $mu subscript 1 end subscript$ )as shown in figure. Aglass plate of thicknesst and refractive index $mu subscript 2 end subscript$ is placed inthepathof $S subscript 2 end subscript$ .Theoptical pathdifferenceatO is

$(μ_{2} - 1) t$
$(μ_{1} - 1) t$
$(\frac{μ_{2}}{μ_{1}} - 1) t$
$(μ_{2} - μ_{1}) t$

The correct answer is: $open parentheses mu subscript 2 end subscript minus mu subscript 1 end subscript close parentheses t$

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