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प्रश्न
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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उत्तर
Yellow
Yellow is the colour of white light that is the least deviated by a prism because it has the largest wavelength of the colours given in the alternatives.
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संबंधित प्रश्न
In the formation of spectrum of white light by a prism:
which colour is deviated least?
Make two diagrams to explain refraction and dispersion.
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.
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
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
Which is optically denser: water or air? Give reason
Explain briefly, with the help of a neat labelled diagram, how white light gets dispersed by a prism. On which surface of a prism, there is both dispersion and deviation of light, and on which surface of the prism, there is only deviation of light ?
In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of prism is ______.
The wavelength range of white light is ______.
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
Distinguish between an impure spectrum and a pure spectrum.
Write the range of wavelength of the ultraviolet spectrum.
The splitting of white light in to seven colors is called ______.
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
What is Newton’s disc?
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
