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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
Study the following ray diagram:
In this diagram, the angle of incidence, the angle of emergence and the angle of deviation respectively have been represented by
(A) y, p, z
(B) x, q, z
(C) p, y, z
(D) p, z, y
Define the term dispersion of white light.
What acts as tiny prisms in the formation of a rainbow?
State the speed of light in (a) air, (b) water, and (c) glass
While performing the experiment to trace the path of a ray of light passing through a glass prism, four students marked the incident ray and the emergent ray in their diagrams in the manner shown below. 
(A) I
(B) II
(C) III
(D) IV
Draw a labeled ray diagram to illustrate the dispersion of a narrow beam of white light when it passes through a glass prism.
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
How can the presence of ultraviolet radiation be detected?
Write the range of wavelength of the infrared spectrum.
What is Newton’s disc?
