In a young's double slit experiment, sli...

In a young's double slit experiment, slits are illuminated by a monochromatic source of wavelength `6000Å` and fringes are obtained. If screen is moved by a distance of 5 cm towards slits, change in fringe width is `3 xx 10^(-5) m`. Then separation between the slits will be :

1 mm

1.2 mm

1.5 mm

1.63 mm

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