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प्रश्न
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
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उत्तर
- The phenomenon of splitting of light into its component colours is called dispersion of light.
- In the spectrum of light splitting of white light into different colours takes place. Various colours obtained in spectrum of light are in the sequence - Violet, Indigo, Blue, Green, Yellow, Orange and red.
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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
- 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.
- Mark the least deviated colour in your diagram.
- Why do different coloured rays deviate differently in a prism?
How could you show that the colours of the spectrum combine to give white light?
The property of splitting of white light into its seven constituent colours is known as
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white light.
If a monochromatic beam of light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
Make the correct choice for each of the following:
Which one of the following Fig correctly shows the path of the ray through the glass block?
A wave has wavelength 50Å of State the speed in vacuum.
Write the range of wavelength of the ultraviolet spectrum.
The process of separation of light into its component colours while passing through a medium is called _______.
Observe the given figure and write appropriate phenomenon of light in the box.
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
What is Newton’s disc?
The periscope is an optical device with a polished surface that reflects the light falling on it.
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
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.
