6.3.2 Refraction of Waves

    Cards (43)

    • Refraction occurs when waves pass from one medium to another with a different refractive index
    • As density increases, wave speed decreases
    • Waves require more energy to travel through denser materials.

      True
    • What does Snell's Law describe?
      Wave bending
    • Match the symbol in Snell's Law with its meaning:
      \( n_1 \) ↔️ Refractive index of medium 1
      \( n_2 \) ↔️ Refractive index of medium 2
      \( \theta_1 \) ↔️ Angle of incidence
      \( \theta_2 \) ↔️ Angle of refraction
    • When a wave passes from a lower refractive index medium to a higher one, it bends towards the normal.

      True
    • What is the definition of refraction?
      The bending of waves
    • Match the factor with its effect on refraction:
      Angle of Incidence ↔️ The angle at which the wave hits the boundary
      Speed of Wave ↔️ The speed of the wave changes
      Refractive Index ↔️ How much the speed is reduced
    • A wave bends towards the normal when passing from a medium with a higher refractive index to a lower refractive index.
      False
    • What is the relationship between wave speed and density?
      Inversely related
    • Match the density with the wave speed:
      Lower density ↔️ Higher speed
      Higher density ↔️ Lower speed
    • The formula for Snell's Law is n_1 \sin \theta_1 = n_2 \sin \theta_2</latex>
    • If light travels from air (\( n_1 = 1 \)) to glass (\( n_2 = 1.5 \)) at an angle of incidence \( \theta_1 = 30^\circ \), what is the angle of refraction \( \theta_2 \) approximately?
      19.47∘19.47^\circ
    • How does a wave bend when it passes from a medium with a higher refractive index to one with a lower refractive index?
      Away from the normal
    • Steps in applying Snell's Law
      1️⃣ Identify the refractive indices of both media
      2️⃣ Measure the angle of incidence
      3️⃣ Apply the formula: n1sin⁡θ1=n_{1} \sin \theta_{1} =n2sin⁡θ2 n_{2} \sin \theta_{2}
      4️⃣ Calculate the angle of refraction
    • When a wave passes from a lower to a higher refractive index, it bends towards the normal.
      True
    • What happens to a wave's direction when it moves from a higher to a lower refractive index medium?
      Bends away from the normal
    • Light traveling from air to glass at an incidence angle of 30∘30^\circ will have an angle of refraction of approximately 19.47^\circ</latex>.

      True
    • Match the variable in Snell's Law with its meaning:
      n_1 ↔️ Refractive index of the first medium
      \theta_2 ↔️ Angle of refraction
    • What is the relationship between wave speed and density of a medium?
      Inversely related
    • Refraction occurs when waves pass from one medium to another with a different frequency.
      False
    • Match the density of the medium with its effect on wave speed:
      Lower density ↔️ Higher speed
      Higher density ↔️ Lower speed
    • As the density of a medium increases, the wave speed decreases.

      True
    • What does Snell's Law describe?
      Light wave bending
    • The formula for Snell's Law is n_{1} \sin \theta_{1} = n_{2} \sin \theta_{2}.
    • Refraction occurs when waves pass from one medium to another with a different refractive index.
    • What happens to a wave when it undergoes normal incidence?
      It does not bend
    • Match the real-life scenario with its application of Snell's Law:
      Prism ↔️ Separates white light into colors
      Lenses in Eyeglasses ↔️ Focus light to create images
      Rainbow Formation ↔️ Refraction of sunlight through water
    • What two factors are adjusted in Snell's Law to control the path of light?
      Angle of incidence and refractive index
    • The wave speed is inversely related to the density
    • Match the term with its definition:
      Refractive index ↔️ Ratio of wave speeds in a medium compared to a vacuum
      Angle of incidence ↔️ Angle at which a wave hits the boundary
    • Snell's Law states that n_{1} \sin \theta_{1} = n_{2} \sin \theta_{2}</latex>, where <tex>n1n_{1}</tex> is the refractive index of the first medium
    • In Snell's Law, <tex>θ1\theta_{1}</tex> represents the angle of incidence
    • What happens to the wave speed as the density of the medium increases?
      Decreases
    • Steps to calculate the angle of refraction using Snell's Law
      1️⃣ Identify the refractive indices of both media
      2️⃣ Measure the angle of incidence
      3️⃣ Apply Snell's Law: n1sin⁡θ1=n_{1} \sin \theta_{1} =n2sin⁡θ2 n_{2} \sin \theta_{2}
      4️⃣ Solve for <tex>θ2\theta_{2}</tex>
      5️⃣ Calculate the value of <tex>arcsin⁡(θ2)\arcsin(\theta_{2})</tex>
    • Snell's Law describes the relationship between the angles of incidence and refraction
    • What is the effect of the angle of incidence on refraction?
      Affects the degree of bending
    • The wave speed is inversely related to the density of the medium.
    • Match the variable in Snell's Law with its meaning:
      \(n_1\) ↔️ Refractive index of the first medium
      \(\theta_1\) ↔️ Angle of incidence
      \(n_2\) ↔️ Refractive index of the second medium
      \(\theta_2\) ↔️ Angle of refraction
    • What is the angle of refraction when light travels from air (\(n_1 = 1\)) to glass (\(n_2 = 1.5\)) at an angle of incidence of \(30^\circ\)?
      19.47^\circ
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