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Wave Optics

Question

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How does the angular separation of interference fringes change, in Young's experiment, if the distance between the slits is increased?

Solution

Angular seperation of interference fring is given by,

ω = \frac{λD}{d}

Therefore, when separation between slits (d) is increased, then fringe width 'ω' is decreased since, they have an inverse dependence.

Some More Questions From Wave Optics Chapter

What is the shape of the wavefront in each of the following cases:
Light diverging from a point source.

What is the shape of the wavefront in each of the following cases:
Light emerging out of a convex lens when a point source is placed at its focus.

What is the shape of the wavefront in each of the following cases:
The portion of the wavefront of light from a distant star intercepted by the Earth.

Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?

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