Advertisements
Advertisements
प्रश्न
Complete the ray diagram given below to show the nature of light produced on the screen.
The completed ray diagram is as shown below:
Advertisements
उत्तर
Explanation:
-
A beam of white light enters the first glass prism A.
-
It gets dispersed into its constituent colors, mainly Violet (V) and Red (R) shown here.
-
This is called dispersion of light.
Then, these separated colors pass through a second identical prism B, which is placed in the inverted position compared to A. The second prism recombines the colors back into white light. So, the light coming out of prism B and reaching the screen is white light again.
APPEARS IN
संबंधित प्रश्न
The path of a ray of light passing through a glass prism is shown below:
In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
(A) O, Y, Z and N,
(B) P, Y, M and Z,
(C) O, X, M and Z,
(D) P, X, Z and N.
State the cause of dispersion of white light
The speed of light in air or vacuum is
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent rays.
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
Which one of the following is involved for the formation of rainbow in the sky?
What is Newton’s disc?
In the following diagram showing dispersion of white light by a glass prism, the colours 'P' and 'Q’ respectively are:
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’.
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?
