At the first minimum adjacent to the central maximum of a single-slit diffraction pattern, the phase difference between the Huygen's wavelet from the edge of the slit and the wavelet from the midpoint of the slit is :
radian
radian
radian
radian
Intensity of Diffracted light -
- wherein
Where
At the first minimum, wavelet coming from edge of the slit is balanced out by wavelet coming from middle of the slit hence the phase difference between wavelet from edge of the slit to wavelet from middle of the slit is radian
Option 1)
radian
This option is incorrect
Option 2)
radian
This option is correct
Option 3)
radian
This option is incorrect
Option 4)
radian
This option is incorrect