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प्रश्न
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
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उत्तर
focussed
A beam of white light when shone on to a glass prism can be deviated, dispersed or refracted, but it cannot be focussed.
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संबंधित प्रश्न
Why do the component colours of incident white light split into a spectrum while passing through a glass prism, explain
State the cause of dispersion of white light
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.
What acts as tiny prisms in the formation of a rainbow?
What are the seven colours seen in a rainbow?
In which of the following four diagrams is the correct path of a ray of light passing through a glass prism shown ?
A glass prism is able to produce the spectrum when white light passes through it, but a glass slab doesn’t produce any spectrum. Explain why it is so.
A wave has wavelength 50Å of State the speed in vacuum.
Which characteristic property of light is responsible for the blue colour of the sky?
How can the presence of ultraviolet radiation be detected?
State two uses of ultraviolet radiation.
Distinguish between an impure spectrum and a pure spectrum.
Write the range of wavelength of the infrared spectrum.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
The phenomena of light involved in the formation of rainbow are ______.
What is Newton’s disc?
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
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’.
