Interferences: fundamentals

Course content

Indicate which statements are true:

Question

The longer the lifespan of a wave front, the more monochromatic the light.

Solution

Question

The longer the lifespan of a wave front, the weaker the frequency.

Solution

Question

The longer the lifespan of a wave front, the larger the coherence length.

Solution

Question

In emptiness, the triad is orthogonal for an electromagnetic wave.

Solution

Question

A parallel beam of light represents a plane wave.

Solution

Question

Wave surfaces contain light rays.

Solution

Question

Quasi monochromatic light has a large spectrum.

Solution

Question

The coherence length of a quasi monochromatic laser (gas) source is large, up to several meters.

Solution

Question

A wave surface is the site of all points where the electrical field vectors oscillate at the same phase (modulo   )

Solution

Question

Two wave surfaces at a distance of   oscillates at the same phase (modulo )

Solution

Question

Two polarized rectilinear waves whose polarization directions intersect at an angle of 90˚can interfere.

Solution

Question

Two polarized rectilinear wave whose polarization directions intersect at an angle of 45˚can interfere.

Solution

Question

The fringe contrast of interferences is the greatest when the two sources have the same intensity.

Solution
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