Answer & explanation
Correct answer: option 3
$\text{ Intensity at central maxima is } I_{max} = 4I = I_0$
$\text{When one of the slit is covered the intensity at central maxima point is } I = \frac{I_0}{4}$
Correct answer: option 3
$\text{ Intensity at central maxima is } I_{max} = 4I = I_0$
$\text{When one of the slit is covered the intensity at central maxima point is } I = \frac{I_0}{4}$