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Question
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
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Solution
Precautions to be observed to trace the path of a ray of light through a glass prism:
1. Make sure the prism taken is polished and not broken.
2. Make sure to look at the image through the proper eye level through the prism.
3. Sharp lines need to be drawn so that proper results can be observed.
4. The angle of incidence ideally should be 45o for a better outcome.
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RELATED QUESTIONS
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
In the formation of spectrum of white light by a prism:
which colour is deviated most?
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
State the speed of light in (a) air, (b) water, and (c) glass
What do you understand by the term spectrum?
Complete the ray diagram given below to show the nature of light produced on the screen.
If white light is used in same way what change is expected in the emergent beam?
The process of separation of light into its component colours while passing through a medium is called _______.
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 ______.
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.
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