Part 1.) Light of wavelength 560 nm is incident on a long narrow slit. Find the angle of the first diffraction minimum if the width of the slit is 1...

Part 1.) Light of wavelength 560 nm is incident on a long narrow slit. Find the angle of the first diffraction minimum if the width of the slit is 1 mm. Answer in units of mrad.

Part 2.) Find the angle of the first diffraction minimum if the width of the slit is 0.1 mm. Answer in units of mrad.