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प्रश्न
What happens when a ray of ordinary light is passed through a triangular glass prism?
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उत्तर
When a ray of ordinary light is passed through a triangular glass prism, the light splits into a spectrum of seven colours. This splitting of light into its constituent colours is called dispersion of light. The role of the prism is to separate the seven colours of the white light.
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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.
In the formation of spectrum of white light by a prism:
which colour is deviated least?
What is spectrum? What is the name of glass shape used to produce a spectrum?
What are the seven colours seen in a rainbow?
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
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
When white light passes through a prism, it ............
State the speed of light in (a) air, (b) water, and (c) glass
How does the speed of light determine the optical density of a medium?
In figure AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.
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 ?
A ray of white light is passed through a glass prism and a spectrum is obtained on a screen.
- Name the seven colours of the spectrum in order.
- Do the colours have the same width in the spectrum?
- Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least?
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
(A) is parallel to the incident ray
(B) perpendicular to the incident ray
(C) is parallel to the refracted ray
(D) bends at an angle to the direction of incident ray
The wavelength range of white light is ______.
A wave has wavelength 50Å of State the speed in vacuum.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
State True or False:
"Wavelength of red light is close to 700 nm.”
State the colour which bends:
- The most.
- The least while passing through a glass prism.
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?
