question_answer

If the path difference produced due to  interference of light coming out of two slits for yellow colour of light at a point on the screen be \[3\lambda /2\],will be the colour of the fringe at the point ? Give reason also.

Answer:

                The given path difference satisfies condition for the minimum of intensity for yellow Hence if yellow light is used, a dark fringe will be formed at the given point. If white light is used, all components white light except the yellow one would be present a point.