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प्रश्न
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
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उत्तर
dispersion
The splitting of white light into seven colours on passing through a glass prism is called dispersion.
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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
As light rays pass from air into a glass prism, are they refracted towards or away from the normal?
In the formation of spectrum of white light by a prism:
which colour is deviated most?
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
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.
When white light passes through a prism, it ............
A wave has wavelength 50Å of name the wave.
State two uses of ultraviolet radiation.
Write the range of wavelength of the infrared spectrum.
Draw a neat and labelled diagram for dispersion of light.
The splitting of white light in to seven colors is called ______.
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
What is a rainbow?
The angle of deviation through a prism is minimum when
- Incident rays and emergent rays are symmetric to the prism.
- The refracted ray inside the prism becomes parallel to its base.
- The angle of incidence is equal to that of the angle of emergence.
- When the angle of emergence has doubled the angle of incidence.
Choose the correct answer from the options given below:
State True or False:
"Wavelength of red light is close to 700 nm.”
Observe the given diagram and answer the questions:
- Name the process shown in the figure.
- Name the colour that deviates the most.
- Name the colour that deviates the least.
- Name any one phenomenon in nature which is based on the above process.
- Define ‘spectrum’.
