Which of the following statements is INCORRECT?
1
The phenomenon of bending of light around the corners of an obstacle/aperture of the size of the wavelength of light is called diffraction.
2
Diffraction is the result of the superposition of secondary wavelets originating from different parts of the same wavefront.
3
All bright fringes in diffraction are of the same intensity.
4
The width of the central bright fringe in diffraction is twice the width of any secondary maxima.