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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
The path of a ray of light passing through a glass prism is shown below:
In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
(A) O, Y, Z and N,
(B) P, Y, M and Z,
(C) O, X, M and Z,
(D) P, X, Z and N.
Draw a ray diagram to explain the term angle of deviation.
State the cause of dispersion of white light
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
In the formation of spectrum of white light by a prism:
which colour is deviated least?
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.
What acts as tiny prisms in the formation of a rainbow?
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
The seven colours in the spectrum of sunlight in order, are represented as :
Define the term dispersion of light.
A wave has wavelength 50Å of State its one use.
What is the cause of the dispersion of white light through a glass prism? Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in an inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the faces of the prisms.
State two properties of ultra-violet radiations which differ from visible light.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent rays.
Write an Explanation.
Critical angle
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
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.
Which colour will show the maximum angle of deviation and which colour will show the minimum angle of deviation?
