Question

Wave normal are drawn to a wavefront at various points. It is found that they are parallel in a vertical plane and diverging in a horizontal plane. Then the source of the wavefront is

1) a point source                  2) a narrow horizontal slit

3) a narrow vertical slit        4) a tuning fork

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Answer 1

Answer:

1..

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Answer 2

Explanation:

Answers. The shape of the wave front in case of a light diverging from a point source is spherical and is shown in the given figure. The shape of the wavefront in case of a light emerging out of a convex lens when a point source is placed at its focus is a parallel grid.........

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