Refraction of Light
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Questions and Answers

What is the relationship between the wavelength of light and the critical angle?

  • sin C ∝ λ
  • sin C ∝ λ^2
  • sin C ∝ 1/λ (correct)
  • sin C ∝ 1/λ^2

    • What happens to the refractive index of a material with an increase in temperature?

  • It becomes zero
  • It increases
  • It decreases (correct)
  • It remains constant

    • What is the condition for total internal reflection to occur?

  • i < θC
  • i > θC (correct)
  • i = 2θC
  • i = θC

    • What is the reason for the brilliance of a diamond?

    <p>Due to repeated internal reflections</p> Signup and view all the answers

    What is the bending of light called when it passes from one medium to another?

    <p>Refraction</p> Signup and view all the answers

    What is the phenomenon where an optical illusion occurs in deserts due to total internal reflection?

    <p>Sky Mirage</p> Signup and view all the answers

    What is the ratio of the sine of the angle of incidence to the sine of the angle of refraction?

    <p>A constant called refractive index</p> Signup and view all the answers

    What is the refractive index of a medium a measure of?

    <p>The speed of light in a medium</p> Signup and view all the answers

    What is the difference between absolute and relative refractive index?

    <p>Absolute refractive index is for a specific medium, relative refractive index is between two mediums</p> Signup and view all the answers

    What is the formula for Snell's law in vector form?

    <p>ˆi × nˆ = μ (rˆ × nˆ)</p> Signup and view all the answers

    What is the refractive index of a material if the reflected and refracted waves are mutually perpendicular?

    <p>3</p> Signup and view all the answers

    What is the velocity of light in a glass whose refractive index with respect to air is 1.5?

    <p>2 × 10^8 m/s</p> Signup and view all the answers

    If the velocity of light in a certain liquid is 2.50 × 10^8 m/s, what is the refractive index of the liquid with respect to air?

    <p>1.20</p> Signup and view all the answers

    What is the condition for the emergent ray to be parallel to the incident ray when a ray of light passes through four transparent media?

    <p>μ4 = μ1</p> Signup and view all the answers

    What is the relation between the refractive index and the velocity of light in a medium?

    <p>μ ∝ 1/v</p> Signup and view all the answers

    What is the minimum refractive index of the liquid required for total internal reflection to occur at the surface PQ?

    <p>1.3</p> Signup and view all the answers

    What is the angle of deviation of the light ray as it passes through the combination of prisms?

    <p>30o</p> Signup and view all the answers

    What is the relation between the angle of incidence and the angle of emergence in a prism?

    <p>i = e</p> Signup and view all the answers

    What is the condition for total internal reflection to occur at the surface of a prism?

    <p>sin i &gt; sin C</p> Signup and view all the answers

    What is the refractive index of the prism if the angle of deviation is 45o and the angle of incidence is 30o?

    <p>1.5</p> Signup and view all the answers

    If the refractive index of a prism is 2, what is the angle of incidence for which the angle of deviation is minimum?

    <p>45°</p> Signup and view all the answers

    What is the condition for total internal reflection to occur when a ray of light passes from a denser medium to a rarer medium?

    <p>The angle of incidence is greater than the critical angle.</p> Signup and view all the answers

    What is the relationship between the refractive index and the velocity of light in a medium?

    <p>The refractive index is inversely proportional to the velocity of light.</p> Signup and view all the answers

    What is the bending of light as it passes from one medium to another due to the difference in the optical densities of the two media?

    <p>Refraction of light</p> Signup and view all the answers

    What is the angle of deviation of a ray of light passing through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 3/4 of the angle of the prism?

    <p>18° 36'</p> Signup and view all the answers

    What is the maximum value of the base angle for which light is totally reflected from the hypotenuse of a right-angled prism?

    <p>sin⁻¹(1/μ)</p> Signup and view all the answers

    What is the relationship between the angle of incidence and the angle of emergence in a prism?

    <p>They are equal</p> Signup and view all the answers

    What happens to the angle of deviation of a ray of light when the prism is removed?

    <p>It is halved</p> Signup and view all the answers

    What is the formula for the angle of deviation of a ray of light in a prism?

    <p>(μ - 1)A</p> Signup and view all the answers

    What is the condition for total internal reflection to occur at the surface of a prism?

    <p>The angle of incidence is greater than the critical angle</p> Signup and view all the answers

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