1.

Statement I : If phase difference between the lightwaves emerging from slits of Young's experiment is pi radian, then central fringe will be dark. Statement II : Light from two coherent sources is reaching screen. If path difference at a point on the screen for the yellow light is (3lambda)/(2), then the fringe at that point is coloured, bright.

Answer»

Statement I is true, statement II is false.
Statement I is false, statement IIis true
Statement I is true, statement II is true. Statement II is CORRECT EXPLANATION of statement I.
Statement I is true, statement II is true and statement I is not correct explanation of statement II.

Solution :Path difference = `(2n + 1)lambda/2` for DARK FRINGE for n = 1, the path difference = `(3 lambda)/(2)`
which given dark fringe.


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