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Two sources S1 and S2 of intensities I1 ...

Two sources `S_1` and `S_2` of intensities `I_1` and `I_2` are placed in front of a screen. The pattern of intensity distribution seen in the central portion is given by Fig. 10.6.
In this case which of the following statements are true.

A

`S_1` and `S_2` have the same intensities.

B

`S_1` and `S_2` have a constant phase difference.

C

`S_1` and `S_2` have the same phase.

D

`S_1` and `S_2` have the same wavelength.

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