Advertisements
Advertisements
प्रश्न
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
Advertisements
उत्तर
- The phenomenon of splitting of light into its component colours is called dispersion of light.
- In the spectrum of light splitting of white light into different colours takes place. Various colours obtained in spectrum of light are in the sequence - Violet, Indigo, Blue, Green, Yellow, Orange and red.
APPEARS IN
संबंधित प्रश्न
Draw a ray diagram to explain the term angle of deviation.
Define the term dispersion of white light.
Draw a ray diagram to show the dispersion of white light.
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
Make two diagrams to explain refraction and dispersion.
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?
What acts as tiny prisms 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
Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow
When white light passes through a prism, it ............
In figure AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.
Define the term dispersion of light.
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
(A) is parallel to the incident ray
(B) perpendicular to the incident ray
(C) is parallel to the refracted ray
(D) bends at an angle to the direction of incident ray
State two uses of ultraviolet radiation.
Write the range of wavelength of the ultraviolet spectrum.
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.
Draw a neat and labelled diagram for dispersion of light.
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
