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In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen.
Why do different colours of white light bend through different angles with respect to the incident beam of light?
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Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
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Make two diagrams to explain refraction and dispersion.
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Describe how you could demonstrate that white light is composed of a number of colours.
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How could you show that the colours of the spectrum combine to give white light?
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Which is refracted most by a prism : red light or violet light? Explain why?
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Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
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What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
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What acts as tiny prisms in the formation of a rainbow?
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Name the process which is involved in the formation of a rainbow.
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What are the seven colours seen in a rainbow?
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A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
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A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue
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The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
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Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow
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The colour of white light which is deviated the maximum on passing through the glass prism is:
(a) blue
(b) indigo
(c) red
(d) orange
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The splitting up of white light into seven colours on passing through a glass prism is called:
(a) refraction
(b) deflection
(c) dispersion
(d) scattering
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Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green
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The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
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Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
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