EASY
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When white light is incident on the surface of an equiangular triangular prism, colour is deviated the most.

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Important Questions on Spectrum

EASY
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
The correct arrangement of colors in the descending order of their wavelength
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

The refraction of light by a prism is shown in the following figure. Then ∠D is:

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EASY
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
Which colour of the light has the longest wavelength?
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
The order of wavelength of visible rays is
MEDIUM
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
Draw a labelled diagram of the refraction of light through a prism.
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

Explain the refraction of light with the help of a Glass Prism.

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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
Two plane mirrors P & Q are kept at ? with respect to each other. Light falls on P is reflected and then fall on Q and is reflected. The emergent ray is opposite to the direction of incident ray. The ? is equal to :
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

Differentiate between a glass slab and a glass prism.

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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

How many rectangular surfaces are there in a prism?

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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
Write the material that you used to find out the value of refractive index of a prism. What is the necessity of the graph in this experiment?
MEDIUM
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

A student traces the path of a ray of light through a glass prism as shown in the diagram, but leaves it incomplete and unlabelled. Redraw and complete the diagram. Also, label on it ∠i, ∠e, ∠r and ∠D.

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HARD
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
How does the angle of deviation formed by a prism change with the increase in the angle of incidence? Draw a graph showing the variation in the angle of deviation with the angle of incidence at a prism surface.
MEDIUM
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
When a ray passes through a prism:
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
Two beams of red and violet colors are made to pass separately through a prism (angle of the prism is 60°). In the position of minimum deviation, the angle of refraction will be
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

While performing the experiment to trace the path of a ray of light passing through glass prism, four students marked the incident ray and the emergent ray in their diagrams in the manner shown below:

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The correct path of the rays has been shown by:

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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
When a ray of light is incident on one face of a prism, then angle of incidence (i) and angle of refraction (r) are related as:
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Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let D1 and D2 be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then
MEDIUM
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true?

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MEDIUM
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
EASY
Science>Physics>Spectrum>Deviation Produced by a Triangular Prism

In the figure shown the refracted ray is

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