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Calculate dispersive power of a transparent material given: nV=1.56, nR=1.54, nY=1.55.

Important Questions on Refraction and Dispersion of Light through a Prism

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12th ICSE
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ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>QUESTIONS>Q 20
The refractive indices of a material for red, violet and yellow lights are 1.52, 1.62 and 1.59 respectively. Calculate the dispersive power of the material. If the mean deviation is 40°, then will be the angular dispersion produced by a prism of this material?
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12th ICSE
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ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 1
The refractive index of the material of a prism is 2 and the angle of the prism is 30°. On of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is:
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12th ICSE
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ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 2
In an experiment for determination of the refractive index of a glass of a prism by i-δ, plot, it was found that a ray incident at an angle 35°, suffers minimum deviation of 40° and that it emerges at an angle 79°. In that case which of the following is closest to the maximum possible value of the refractive index?
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12th ICSE
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ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 3
The refracting angle of a prism is A and the refractive index of its material is cot A2. The angle of minimum deviation is:
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12th ICSE
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ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 4
The angle of incidence for a ray of light at a refracting surface of a prism is 45°. The angle of prism is 60°. If the ray suffers deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 5

A parallel beam of light is incident from air at an angle α on the side PQ of a right-angled triangular prism of refractive index n=2. Light undergoes total internal reflection at the prism at the face PR when α has a minimum value of 45°. The angle θ of the prism is:

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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 6

Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is n, a ray incident at an angle θ, on the face AB would get transmitted through the face AC of the prism provided.

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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 4 - Refraction and Dispersion of Light through a Prism>For DIFFERENT COMPETITIVE EXAMINATIONS>Q 7

A beam of light consisting of red, green and blue colours is incident on a right-angled prism. The refractive index of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47, respectively. The prism will:

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