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Question
Draw a labelled diagram: Dispersion of light through a prism.
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Solution
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Study the following figure in which a student has marked the angle of incidence (∠i), angle of refraction (∠r), angle of emergence (∠e), angle of prism (∠A) and the angle of deviation (∠D). The correctly marked angles are
(a) ∠A and ∠i
(b) ∠A, ∠i and ∠r
(c) ∠A, ∠i, ∠e and ∠D
(d) ∠A, ∠i, ∠r and ∠D
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.
Draw a ray diagram to explain the term angle of deviation.
Why do the component colours of incident white light split into a spectrum while passing through a glass prism, explain
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
What is spectrum? What is the name of glass shape used to produce a spectrum?
Name the process which is involved in the formation of a rainbow.
The speed of light in air or vacuum is
What do you understand by the term spectrum?
When a white light ray falls on a prism, the ray at its first surface suffers ______.
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
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?
The wavelength range of white light is ______.
Write the range of wavelength of the infrared spectrum.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Observe the given figure and write appropriate phenomenon of light in the box.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
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:
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
