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प्रश्न
Out of air and glass, which is optically rarer? Give reason.
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उत्तर
Air is RARER as the speed of light in air is more than the speed of light in glass.
3 × 108 ms-1 > 2 × 108 ms-1
speed of light in air > speed of light in glass
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संबंधित प्रश्न
A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram.
Trace it on your answer sheet and show the path of the emergent beam as observed on the screen DE.
(i) Write the name and cause of the phenomenon observed.
(ii) Where else in nature is this phenomenon observed?
(iii) Based on this observation, state the conclusion which can be drawn about the constituents of white light.
Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
The seven colours in the spectrum of sunlight in order, are represented as :
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?
Which characteristic property of light is responsible for the blue colour of the sky?
Write the range of wavelength of the ultraviolet spectrum.
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
What is a rainbow?
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
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’.
