List of top Physics Questions on single slit diffraction asked in AP EAPCET

When light of wavelength $\lambda$ incidents on a single slit of width 'a', then the angular width between the third order diffraction maxima on either side of the central maximum is:
The direction of the second order diffraction minima in Fraunhofer diffraction at a single slit (\(a=\) slit width) is given by