Find the right condition(s) for Fraunhofer diffraction due to a single slit

Find the right condition (s) for Fraunhoffer diffraction due to a single slit.

What is the condition for first minima in case of diffraction due to a single slit ?

The condition for observing Fraunhofer diffraction from a single slit is that the light wavefront incident on the slit should be

The condition for observing Fraunhofer diffraction from a single slit is that the light wavefront incident on the slit should be

What is the condition for first minimum in case of diffraction due to single slit?

The condition for observing Fraunhoffer diffraction from a single slit is that the wave fronts incident on the slit should be

What are the conditions of formation of maxima and minima of diffraction fringes in Fraunhofer diffraction in a single slit?