This question is about two-source interference. A double slit is illuminated normally with coherent light. The interference pattern is observed on a screen. The apparatus is shown below not to scale 8 _ coherent light > s H> _ - ,__ ___. , ._ screen The width of both slits in the double slit arrangement is increased without alterinfhe separation 3. Describe and explain the effect, if any, of this change on (a) the number of fringes observed; ' .................................................................................................................... (2) (b) the intensity of the fringes. ................................................................. ......................................................... .............................................................................. .................................. .............................................................................. (3) (Total 5 marks)