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प्रश्न
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
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उत्तर
Violet
Violet is the colour of white light that has the least wavelength.
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संबंधित प्रश्न
Define the term 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.
Which is refracted most by a prism : red light or violet light? Explain why?
Name the process which is involved in the formation of a rainbow.
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
The colour of white light which is deviated the maximum on passing through the glass prism is:
(a) blue
(b) indigo
(c) red
(d) orange
When white light passes through a prism, it ............
A ray of light moving from an optically rarer to a denser medium
The property of splitting of white light into its seven constituent colours is known as
Which is optically denser: water or air? Give reason
Out of air and glass, which is optically rarer? Give reason.
The diagram below shows the path taken by a narrow beam of yellow monochromatic light passing through an equiangular glass prism. If the yellow light is replaced by a narrow beam of white light incident at the same angle, draw another diagram to show the passage of white light through the prism and label it to show the effect of prism on the white light.
When a white light ray falls on a prism, the ray at its first surface suffers ______.
A wave has wavelength 50Å of name the wave.
The phenomenon of splitting of light into its component colours is ___________ .
State two properties of ultraviolet radiation which differ from visible light.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Write an Explanation.
Critical angle
Make a rainbow
Try to make your own rainbow. You can try this project in the morning or in the evening. Stand with your back towards the Sun. Take a hosepipe or a water pipe used in the garden. Make a fine spray in front of you. You can see different colours of rainbow in the spray.
