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प्रश्न
Name the process which is involved in the formation of a rainbow.
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उत्तर
The dispersion of sunlight is the process that is involved in the formation of a rainbow.
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संबंधित प्रश्न
State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of sun contains seven colours using two identical glass prisms. Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism.
A student is observing a diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:
In the formation of spectrum of white light by a prism:
which colour is deviated most?
What acts as tiny prisms in the formation of a rainbow?
A ray of light moving from an optically rarer to a denser medium
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.
When we place a glass prism in the path of a narrow beam of white light a spectrum is obtained. What happens when a second identical prism is placed in an inverted position with respect to the first prism? Draw a labelled ray diagram to illustrate it.
A wave has wavelength 50Å of name the wave.
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
State two properties of ultraviolet radiation 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.
Distinguish between an impure spectrum and a pure spectrum.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
Why do we see a rainbow in the sky only after rainfall?
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
What is Newton’s disc?
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
