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प्रश्न
(i) A ray of white light breaks up into its components while passing through a glass prism. Draw a ray diagram to show the path of rays.
(ii) Mark the least deviated colour in your diagram
(iii) Why do different coloured rays deviate differently in a prism?
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उत्तर
The splitting of white light into its component colours on passing through a glass prism is shown in the following diagram.
(ii) The least deviated colour is red, which is marked in the diagram.
(iii) Different colours have different wavelengths; therefore, they deviate differently when passing through a glass prism. The amount of deviation depends on the wavelength of the coloured light.
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संबंधित प्रश्न
In the following diagram, the path of a ray of light passing through a glass prism is shown:
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option):
(A) X, R and T
(B) Y, Q and T
(C) X, Q and P
(D) Y, Q and P
Draw a ray diagram to show the dispersion of white light.
In the formation of spectrum of white light by a prism:
which colour is deviated least?
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.
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
The speed of light in air or vacuum is
Define the term dispersion of light.
- A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
- If white light is used in the same way as in part (a) above, what change do you expect in the emergent beam?
- What conclusion do you draw about the nature of white light in part (b)?
In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of prism is ______.
The frequency range of visible light is from 3.75 × 1014 Hz to 7.5 × 1014 Hz. Calculate its wavelength range. Take speed of light = 3 × 108 m/s.
The phenomenon of splitting of light into its component colours is ___________ .
Which characteristic property of light is responsible for the blue colour of the sky?
Write three conditions necessary to obtain a pure spectrum on a screen. Name the instrument in which the conditions stated by you are fulfilled.
State two properties of ultra-violet radiations which differ from visible light.
Write an Explanation.
Critical angle
Draw a neat and labelled diagram for dispersion of light.
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
State the colour which bends:
- The most.
- The least while passing through a glass prism.
