How does the angle of minimum deviation produced by a prism change with increase in (i) the wavelength of incident light, and (ii) the refracting angle of prism?

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Solution

Changes in the angle of deviation as we increase:

(i) The wavelength of incident light

As we increase the wavelength, the angle of deviation decreases.

(ii) The refracting angle of the prism

The angle of deviation increases with the increase in the angle of the prism.

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Q. How does the angle of minimum deviation produced by a prism change with increase in the wavelength of incident light

Q. How does the angle of minimum deviation produced by a prism change with increase in the refracting angle of prism?

(a) How does the angle of deviation produced by a prism change with an increase in the angle of incidence? Draw a curve showing the variation in the angle of deviation with the angle of incidence at a prism surface.

(b) Using the curve in part (a) above, how do you infer that for a given prism, the angle of minimum deviation $δ_{m i n}$ is unique for the given light.

How does the deviation produced by a prism depend on (i) the frefractive index of its material, and (ii) the wavelength of incident light.

A ray of light suffers refraction through an equilateral prism. The deviation produced by the prism does not depend on the :

(a) angle of incidence (b) colour of light

(a) material of prism (b) size of prism

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Minimum Deviation

Standard X Physics

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How does the angle of minimum deviation produced by a prism change with increase in (i) the wavelength of incident light, and (ii) the refracting angle of prism?

Changes in the angle of deviation as we increase: (i) The wavelength of incident light As we increase the wavelength, the angle of deviation decreases. (ii) The refracting angle of the prism The angle of deviation increases with the increase in the angle of the prism.

Changes in the angle of deviation as we increase:

(i) The wavelength of incident light

As we increase the wavelength, the angle of deviation decreases.

(ii) The refracting angle of the prism

The angle of deviation increases with the increase in the angle of the prism.