Advertisements
Advertisements
प्रश्न
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
विकल्प
Red
Yellow
Violet
Blue
उत्तर
Red colour is deviated the least in the spectrum of white light obtained with a glass prism.
APPEARS IN
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.
State the cause of dispersion of white light
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
Name the process which is involved in the formation of a rainbow.
What are the seven colours seen in a rainbow?
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
The splitting of white light into its constituent colours is called .............
Which is optically denser: water or air? Give reason
- A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
- If white light is used in the same way as in part (a) above, what change do you expect in the emergent beam?
- What conclusion do you draw about the nature of white light in part (b)?
In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of prism is ______.
In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray
(a) is parallel to the incident ray.
(b) is along the same direction of incident ray.
(c) gets deviated and bends towards the thinner part of the prism.
(d) gets deviated and bends towards the thicker part (base) of the prism.
A wave has wavelength 50Å of State the speed in vacuum.
Draw a labelled diagram: Dispersion of light through a prism.
Rainbow is a beautiful natural phenomenon. It is the combined effect of a natural three processes together produced by light. Write it into the circle.
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
The periscope is an optical device with a polished surface that reflects the light falling on it.
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
