In Fraunhofer diffraction wave front used is __________. A. Spherical B. Circular C. Plane D. Conical 71.In diffraction pattern of monochromatic light the bright bands formed are __________.
A. of uniform intensity
B. of non-uniform intensity
C. of uniform width
D. is of different colors
A. of uniform intensity
B. of non-uniform intensity
C. of uniform width
D. is of different colors