Advertisements
Advertisements
Question
In the formation of spectrum of white light by a prism:
which colour is deviated most?
Advertisements
Solution
In the formation of a spectrum of white light by a prism
violet is deviated the most
APPEARS IN
RELATED QUESTIONS
State the cause of dispersion of white light
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.
How could you show that the colours of the spectrum combine to give white light?
What acts as tiny prisms in the formation of a rainbow?
Which is optically denser: water or air? Give reason
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white 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?
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 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.
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 uses of ultraviolet radiation.
Write the range of wavelength of the visible spectrum.
Write the range of wavelength of the ultraviolet spectrum.
Draw a neat and labelled diagram for dispersion of light.
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
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’.
