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In a Young's double slit experiment, the...

In a Young's double slit experiment, the separation between the slits is `0.15mm` .In the experiment, a source of light of wavelength `589nm` is used and the interference pattern is observed on a screen kept `1.5m` away. The separation between the successive bright fringes on the screen is:
(A) `6.9mm`
(B) `3.9mm`
(C)`5.9mm`
(D)`2.9mm`

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