Advertisements
Advertisements
Question
Make two diagrams to explain refraction and dispersion.
Advertisements
Solution
When we see a pool of water. The pool appears less deep as it is. This is due to the refraction of light.
When white light is allowed to pass through the glass prism. It splits into seven colour this is called dispersion of light.
APPEARS IN
RELATED QUESTIONS
A student traces the path of a ray of light through a triangular glass prism for different values of angle of incidence. On analyzing the ray diagrams, which one of the following conclusions is he likely to draw?
(A) The emergent ray is parallel to the incident ray.
(B) The emergent ray bends at an angle to the direction of the incident ray.
(C) The emergent ray and the refracted ray are at right angles to each other.
(D) The emergent ray is perpendicular to the incident ray.
What will happen if another similar glass prism is placed upside down behind the first prism?
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
Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green
State the speed of light in (a) air, (b) water, and (c) glass
In the following diagram, the correctly marked angles are
(A) All
(B) Only ∠i and ∠A
(C) ∠i, ∠r and ∠A
(D) ∠i, ∠A and ∠D
Make the correct choice for each of the following:
Which one of the following Fig correctly shows the path of the ray through the glass block?
State two uses of ultraviolet radiation.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
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.

In the diagram, a narrow beam of white light is incident on a right-angled isosceles prism. The critical angle of the material of prism for the yellow colour of white light is 45°. Complete the diagram to show the path of blue, yellow, and red colours of white light till they emerge out of the prism.

Draw a neat and labelled diagram for dispersion of 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
The phenomena of light involved in the formation of rainbow are ______.
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.

Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
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?
