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प्रश्न
The refractive index of air with respect to glass is defined: as gµa = sin i/sin r
Write down a similar expression for aµg in terms of angle i and r.
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उत्तर
Given: gμa = `Sin "i"/Sin "r"`
Applying the principle of reversibility:
gμa = `Sin "r"/Sin "i"`
[for the same value of ∠i and ∠r for a given pair of media]
संबंधित प्रश्न
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation
Observe the following figure and answer the questions given under it:
1) How many times does refraction take place in the above figure?
2) What happens to the ray of light when it passes from air to glass?
3) What happens to the ray of light when it passes from glass to air?
4) What are the rays AB and CD in the figure called?
5) Define refraction.
How must light travel out of a substance if it is not going to be refracted?
With the help of diagram of the principal section of a prism, indicate its refracting surfaces, refracting edge and base.
What is the correct reason for blinking / flickering of stars? Explain it.
a) The blasts in the stars.
b) Absorption of star light by the atmosphere.
c) Motion of the stars.
d) Changing refractive index of gases in the atmosphere.
What is meant by the refraction of light?
Glass is transparent in nature. Why does glass powder look opaque? When water is poured over it, it again becomes transparent. Why?
A ray of light passes from water to air. How does the speed of light change?
How does the angle of deviation produced by a prism depend on the colour of light used? Which colour of white light is deviated (i) most, (ii) least, by a prism?
How will you verify the laws of refraction or how the refractive index of glass is determined in the laboratory?
