In a Young's double-slit experiment, let...

In a Young's double-slit experiment, let `S_(1)` and `S_(2)` be the two slits, and `C` be the centre of the screen. If `/_S_(1)CS_(2)=theta` and `lambda` is wavelength, the fringe width will be

`(lamda)/(theta)`

`lamda theta`

`(2lamda)/(theta)`

`(lamda)/(2theta)`

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