A parallel beam of monochromatic light i...

A parallel beam of monochromatic light is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. If the incident beam makes an angle `theta = sin^(-1)((lambda)/(2d))` with the normal to the plane of the slits, there will be .....at the centre `P_(0)` of the pattern.

1/4the maximum intensity

half the maximum intensity

bright

dark

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Dark fringe

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