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प्रश्न
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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उत्तर
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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संबंधित प्रश्न
State the cause of dispersion of white light
(i) A ray of white light breaks up into its components while passing through a glass prism. Draw a ray diagram to show the path of rays.
(ii) Mark the least deviated colour in your diagram
(iii) Why do different coloured rays deviate differently in a prism?
What will happen if another similar glass prism is placed upside down behind the first prism?
How could you show that the colours of the spectrum combine to give white light?
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
The frequency range of visible light is from 3.75 × 1014 Hz to 7.5 × 1014 Hz. Calculate its wavelength range. Take speed of light = 3 × 108 m/s.
In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray
(a) is parallel to the incident ray.
(b) is along the same direction of incident ray.
(c) gets deviated and bends towards the thinner part of the prism.
(d) gets deviated and bends towards the thicker part (base) of the prism.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
What is a rainbow?
State the colour which bends:
- The most.
- The least while passing through a glass prism.
