Question

On diffraction of a single slit experiment how will the width of central maxima change if the slit width is double and the wavelength of light incident on the slit is increased

Answer 1

Explanation:

In a single slit diffraction experiment, if the width of the slit is made double the original width, then the size of the central diffraction band reduces to half and the intensity of the central diffraction band increases up to four times.

Answer 2

note that the width of the central diffraction maximum is inversely proportional to the width of the slit. If we increase the width size, a, the angle T at which the intensity first becomes zero decreases, resulting in a narrower central band