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प्रश्न
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
विकल्प
Red
Yellow
Violet
Blue
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उत्तर
Red colour is deviated the least in the spectrum of white light obtained with a glass prism.
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संबंधित प्रश्न
Make two diagrams to explain refraction and dispersion.
Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue
The speed of light in air or vacuum is
Define the term dispersion of light.
When a white light ray falls on a prism, the ray at its first surface suffers ______.
While performing the experiment to trace the path of a ray of light passing through a glass prism, four students marked the incident ray and the emergent ray in their diagrams in the manner shown below. 
(A) I
(B) II
(C) III
(D) IV
Draw a labeled ray diagram to illustrate the dispersion of a narrow beam of white light when it passes through a glass prism.
An object AB is placed in front of a convex lens as shown in fig. 4. Complete the ray diagram and obtain the image formed and state the nature of the image.
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
Rainbow is formed by dispersion of which light by water drops
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
In dispersion, the color of light that will bend more is ______.
The periscope is an optical device with a polished surface that reflects the light falling on it.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
The angle of deviation through a prism is minimum when
- Incident rays and emergent rays are symmetric to the prism.
- The refracted ray inside the prism becomes parallel to its base.
- The angle of incidence is equal to that of the angle of emergence.
- When the angle of emergence has doubled the angle of incidence.
Choose the correct answer from the options given below:
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.
Which colour will show the maximum angle of deviation and which colour will show the minimum angle of deviation?
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?
