Advertisements
Advertisements
प्रश्न
Observe the given figure and write appropriate phenomenon of light in the box.
Advertisements
उत्तर
Dispersion of light
APPEARS IN
संबंधित प्रश्न
A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram.
Trace it on your answer sheet and show the path of the emergent beam as observed on the screen DE.
(i) Write the name and cause of the phenomenon observed.
(ii) Where else in nature is this phenomenon observed?
(iii) Based on this observation, state the conclusion which can be drawn about the constituents of white light.
In the following ray diagram the correctly marked angle are:
(a) ∠i and ∠e
(b) ∠A and ∠D
(c) ∠i, ∠e and ∠D
(d) ∠r, ∠A and ∠D
What will happen if another similar glass prism is placed upside down behind the first prism?
Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
Make two diagrams to explain refraction and dispersion.
Describe how you could demonstrate that white light is composed of a number of colours.
Which is refracted most by a prism : red light or violet light? Explain why?
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
The splitting up of white light into seven colours on passing through a glass prism is called:
(a) refraction
(b) deflection
(c) dispersion
(d) scattering
What do you understand by the term spectrum? Name the various colours present in the spectrum of sunlight.
Draw a labeled ray diagram to illustrate the dispersion of a narrow beam of white light when it passes through a glass prism.
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
Write an Explanation.
Critical angle
Say TRUE or FALSE
Rainbow is formed by dispersion of which light by water drops
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
Why do we see a rainbow in the sky only after rainfall?
In dispersion, the color of light that will bend more is ______.
