A beam of light parallel to central line...

A beam of light parallel to central line AB is incident on the plane of slits. The number of minima obtained on the large screen is `n_1`. Now if the beam is tilted by some angle `(!= 90^@)` as shown in figure, then the number of minima obtained is `n_2`. Then,

`n_(1)=n_(2)`

`n_(1) gt n_(2)`

`n_(2) gt n_(1)`

`n_(2)` will be zero

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Fringe size will not change

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