Advertisements
Advertisements
प्रश्न
Draw a neat and labelled diagram for dispersion of light.
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
Study the following diagrams in which the path of a ray of light passing through a glass prism as traced by four students P, Q, R and S is shown:
The student who has traced the path correctly is
(A) P
(B) Q
(C) R
(D) S
Draw a ray diagram to explain the term angle of deviation.
State the cause of dispersion of white light
What is spectrum? What is the name of glass shape used to produce a spectrum?
In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen.
State the colour seen (i) at X, and (ii) at Y.
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
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
Out of the following, the colour of light having the maximum wavelength is:
(a) violet
(b) indigo
(c) green
(d) orange
The diagram below shows the path taken by a narrow beam of yellow monochromatic light passing through an equiangular glass prism. If the yellow light is replaced by a narrow beam of white light incident at the same angle, draw another diagram to show the passage of white light through the prism and label it to show the effect of prism on the white light.
The sunlight can be split into its constituent colors using ______.
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
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.
Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
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:
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’.
