Light and Optics: Principles and Theories

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Questions and Answers

What is the speed of light according to the law of refraction?

  • A variable constant
  • A dimensionless constant
  • An absolute constant (c) (correct)
  • A relative constant

What is the relationship between the angle of incidence and the angle of refraction?

  • tan(θ1) = tan(θ2)
  • sin(θ1) / sin(θ2) = constant (correct)
  • sin(θ1) = cos(θ2)
  • sin(θ1) = sin(θ2)

What happens when the refractive index of the two media is equal?

  • The light beam is bent away from the normal
  • The light beam is bent towards the normal
  • The light beam is not bent and continues in the undeflected direction (correct)
  • The light beam is reflected back

What is the direction of bending when the refractive index of the second medium is greater than the first?

<p>Towards the normal (B)</p> Signup and view all the answers

What is the apparent depth of an object submerged in a liquid with a higher refractive index?

<p>Less than the real depth (A)</p> Signup and view all the answers

What is the reason for the apparent shift in the position of the object submerged in a liquid?

<p>The light is refracted by the liquid (C)</p> Signup and view all the answers

What is the path of the light ray as it emerges from the surface at point B?

<p>It is bent away from the normal (A)</p> Signup and view all the answers

What is the relationship between the refractive index and the bending of light?

<p>A higher refractive index bends light towards the normal (C)</p> Signup and view all the answers

What is the condition for total internal reflection to occur?

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

What is the purpose of Snell's law in optics?

<p>To describe the relationship between the angle of incidence and the angle of refraction (C)</p> Signup and view all the answers

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