Intensity with different phase difference

Two coherent waves of intensities I and 4I interfere at a point. If the resultant intensity is 3I, then the phase difference between te two waves at the point is

Phase and phase difference

In a standard YDSE set up,the intensity at a point where phase difference between the light from the slits is (pi)/(3) is I_(0) .The intensity of central maximum will be ?

For minimum intensity the phase difference between the two waves is

Consider interference between waves form two sources of intensities I&4I .Find intensities at point where the phase difference is pi

Consider an interference pattern between two coherent sources. If I_1 and I_2 be intensities at points where the phase difference are pi/3 and (2pi)/3 and respectively , then the intensity at maxima is

Two coherent light beams of intensities I and 4I produce interference pattern. The intensity at a point where the phase difference is zero, will b: