Question

two coherent monochromatic beams of intensities 4I and 6I are superposed, then find the resultant intensity at that point

Answer 1

Answer:

The maximum intensity is given as

= ( √Intensity1 + √Intensity2)^2

= ( √I + √4I)^2 =( √I + 2√I)^2 = { 3√I }^2 = 9I

Minimum Intensity

= ( √Intensity1 - √Intensity2)^2

= ( √4I - √I)^2 = ( √I)^2 = I