Unpolarized light is incident on a plane surface of refractive index μ at angle i. If the reflected light gets totally polarized, write the relation between the angle i and refractive index μ.
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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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Define the term refractive index of a medium in terms of speed of light.
Refractive index of a medium is defined as the ratio of speed of light in vacuum to the speed of light in the medium. i.e., Refractive index (of a medium)...
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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?
In medium 'X' because of lower value of refractive index.
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A plano convex lens of refractive index 1.5 and radius of curvature 30cm is silvered at the curved surface.
(a) : A planoconvex lens behaves like a concave mirror when its curved surface is silvered. Therefore, F of concave mirror so formed = R/μ2 = 30/(2 x 1.5) =10cm To form an image...
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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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When an unpolarized light of intensity I_0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is
The correct answer is (1) When unpolarised light of intensity Io is incident on a polarizing sheet, only Io/2 is transmitted.
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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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Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid?
When μL = μg where μL = Refractive index of liquid and μg = Refractive index of glass
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