Refractive index of two material mediums X and Y are 1.3 and 1.5 respectively. In which of the two, the light would travel faster?
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Figure 10.1 shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is
(a) √3/√2 is the correct option
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How is the refractive index of a medium related to the speed of light?
The refractive index of the medium nm is given by nm= (Speed of light in air) / (Speed of light in medium)=c/v Let v1 be the speed of light in medium 1 and v2 be...
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Light enters from air into glass having refractive index 1.50. What is the speed of light in glass? The speed of light in vacuum is 3 x 108 ms-1.
Given,n=1.5 and the speed of light in vacuum, c = 3x 108 ms-1. We know that the refractive index is given by the expression n =c/v where c is the...
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You are given kerosene, turpentine oil and water. In which of these does the light ray travel fastest? Given refractive index of kerosene = 1.44
Speed of light in a medium is inversely proportional to refractive index of the medium, i.e, v∝1/n. As refractive index of water is minimum, so light travels fastest in water.
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The angle of incidence at which reflected light in totally polarized for reflection from air to glass (refractive index n), is
(d) : According to Brewster's law of polarization, n = taniP where ip is angle of incidence Therefore, ip = tan–1(n).
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A light wave can travel (a) in vacuum (b) in vacuum only (c) in a material medium
(a) in vacuum (c) in a material medium EXPLANATION: The light is an electromagnetic wave that can travel in a vacuum as well as in a transparent material medium.
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A thin lens is made with a material having refractive index L = 1.5. Both the sides are convex. It is dipped in water (μ = 1.33). It will behave like
(a) a convergent lens EXPLANATION: The double convex lens behaves as a convergent lens in the air because the µ of the lens is greater than air. When it is dipped in...
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A convex lens is made of a material having refractive index 1.2. Both the surfaces of the lens are convex.
(b) a divergent lens EXPLANATION: The µ of the convex lens is greater than air so it will act as a convergent lens in the air. When it is dipped in water...
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The refractive index of a glass is 1.520 for red light and 1.525 for blue light
(a) For a thin prism, D = (μ – 1) A Since λb < λr ⇒ μr < μb ⇒ D1 < D2
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(i) What is the relation between critical angle and refractive index of a material?
(i) Relation between refractive index (n) and critical angle (C) is n = 1/sinC (ii) Yes, critical angle depends on wavelength or colour of light; it increases with increase of wavelength being...
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