Question

The contrast in the fringes in any interference pattern depends on :

• A. fringe width
• B. wavelength
• C. intensity ratio of the sources
• D. distance between the sources

Answer 1

The correct option is C intensity ratio of the sources

Interference manifests itself as oscillations in the outgoing intensity , called fringes. he sum of the intensities of the two interfering waves equals the average of the fringes. The contrast in the fringes is manifested by making the differences between the two input intensities to be large. Thus the constrast depends on the intensity ratio of the sources.