Define a wavefront. Using Huygens' principle verify the laws of reflection at a plane surface.

(a) Define a wavefront. Using Huygen's principle, verify the laws of reflection at a plane surface . (b) In a single slit diffraction experiment the wildth of the slit is made double the orignal width. How does this affect the size and intensity of the central diffraction band ? Explain. (c) When a tiny circular obstacle in placed in the path of light from a distance source, a bright spot is seen at the centre of the obstacle . Explain why.

Using Huygens' principle, establish the law of reflection.

Wavefront and Huygens principle

Using Huygens theory, verify the law of reflection?