1.

A point source S emits light of wavelength 600 nm. It is palced at a very small distance from a flat reflecting mirror AB. Interface. Frignes as observed on the screen placed parallel to reflecting surface at very large distance D from it. The ratio of minimum to maximum intensities in the interference frignes formed near the point P is 1/6. Q. What is the shape of interference fringes on the screen?

Answer»

elliptical
paraboloid
circular
none of these

Answer :C


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