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प्रश्न
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
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उत्तर
yellow
Yellow is the coloured light with the maximum speed in a glass prism as it has the greatest wavelength.
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संबंधित प्रश्न
Study the following diagrams in which the path of a ray of light passing through a glass prism as traced by four students P, Q, R and S is shown:
The student who has traced the path correctly is
(A) P
(B) Q
(C) R
(D) S
State the cause of dispersion of white light
In the formation of spectrum of white light by a prism:
which colour is deviated least?
In the formation of spectrum of white light by a prism:
which colour is deviated most?
When a beam of white light is passed through a prism, it splits to form lights of seven colours. Is it possible to recombine the lights of seven colours to obtain the white light again? Explain your answer.
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.
State the colour seen (i) at X, and (ii) at Y.
Make two diagrams to explain refraction and dispersion.
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
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
Out of air and glass, which is optically rarer? Give reason.
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white light.
Explain the cause of dispersion of white light through a prism.
In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray
(a) is parallel to the incident ray.
(b) is along the same direction of incident ray.
(c) gets deviated and bends towards the thinner part of the prism.
(d) gets deviated and bends towards the thicker part (base) of the prism.
Distinguish between an impure spectrum and a pure spectrum.
The sunlight can be split into its constituent colors using ______.
What is a rainbow?
Make a rainbow
Try to make your own rainbow. You can try this project in the morning or in the evening. Stand with your back towards the Sun. Take a hosepipe or a water pipe used in the garden. Make a fine spray in front of you. You can see different colours of rainbow in the spray.
