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Dispersion of Light

What is mean ...

Question

What is mean by dispersive power of a transparent material?

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Solution

When white light passes through a thin prism, the ratio of the angular dispersion between the violet and the red emergent rays and the deviation suffered by the mean ray (yellow colour) is called dispersive power of an optical medium.

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Similar questions

Q. Calculate dispersive power of a transparent material with the given:

n_{v} = 1.56, n_{r} = 1.54, n_{y} = 1.55

Q. A convex lens, glass slab, a glass prism, and a spherical solid ball have been prepared from the same optically transparent material. Dispersive power will be possessed only by

Q. The dispersive power is maximum for the material

Q. If the ratio of dispersive powers of the materials of two prisms be

2 : 3

and ratio of angular dispersions produced by them is

1 : 2

, then the ratio of mean deviation produced by them is:

Q. The minimum deviations suffered by, yellow and violet beams passing through an equilateral transparent prism are 38.4°, 38.7° and 39.2° respectively. Calculate the dispersive power of the medium.

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