P6

Cards (253)

  • What are the three possible outcomes when a wave arrives at a boundary between two materials?
    Absorption, transmission, reflection
  • What happens to the energy of a wave when it is absorbed by a material?
    It is transferred to the material's energy stores
  • What is the result of wave transmission at a boundary?
    The wave enters the material and continues traveling
  • What is the rule that governs the reflection of waves?
    The angle of incidence equals the angle of reflection
  • If the angle of incidence is 30 degrees, what is the angle of reflection?
    30 degrees
  • What is the normal in a ray diagram?
    A dashed line perpendicular to the surface
  • Why is the normal important in drawing a ray diagram?
    It helps measure the angle of incidence and reflection
  • What is the point where the incoming ray touches the boundary called?
    Point of incidence
  • What is specular reflection?
    Reflection from a smooth surface where all normals are aligned
  • What is diffuse reflection?
    Reflection from a rough surface where normals are scattered
  • Why can't you see your reflection in a piece of paper?
    Because paper causes diffuse reflection, scattering light in all directions
  • What is the angle of incidence in a ray diagram?
    The angle between the incoming ray and the normal
  • If the angle of incidence is 45 degrees, what is the angle of reflection?
    45 degrees
  • What determines whether a wave is reflected, absorbed, or transmitted at a boundary?
    The wavelength of the wave and the properties of the materials
  • What is the angle of reflection in a ray diagram?
    The angle between the reflected ray and the normal
  • Why does a mirror produce a clear image?
    Because it causes specular reflection, reflecting light uniformly
  • How does the surface roughness affect the reflection of light?
    Rough surfaces cause diffuse reflection, scattering light in different directions
  • What is the angle between the normal and the surface in a ray diagram?
    90 degrees
  • If the angle of incidence is 60 degrees, what is the angle of reflection?
    60 degrees
  • What happens to the normals in diffuse reflection?
    They point in different directions due to the rough surface
  • What is the angle of incidence equal to in reflection?
    The angle of reflection
  • Why is the angle of incidence equal to the angle of reflection?
    Because it is a fundamental law of reflection
  • If the angle of incidence is 75 degrees, what is the angle of reflection?
    75 degrees
  • What is the main difference between specular and diffuse reflection?
    Specular reflection occurs on smooth surfaces, diffuse on rough surfaces
  • What is the point of incidence in a ray diagram?
    The point where the incoming ray touches the boundary
  • Why do rough surfaces scatter light in diffuse reflection?
    Because the normals point in different directions due to surface roughness
  • If the angle of incidence is 15 degrees, what is the angle of reflection?
    15 degrees
  • What is the relationship between the angle of incidence and the angle of reflection?
    They are always equal
  • What is the angle of reflection equal to in reflection?
    The angle of incidence
  • Why is the normal perpendicular to the surface in a ray diagram?
    Because it is used to measure the angles of incidence and reflection
  • If the angle of incidence is 50 degrees, what is the angle of reflection?
    50 degrees
  • What is the key difference between specular and diffuse reflection in terms of image formation?
    Specular reflection forms clear images, diffuse does not
  • What is the angle of incidence measured between?
    The incoming ray and the normal
  • Why does a rough surface like paper not produce a clear image?
    Because it causes diffuse reflection, scattering light in all directions
  • If the angle of incidence is 80 degrees, what is the angle of reflection?
    80 degrees
  • What is the role of the normal in determining the angle of reflection?
    It serves as a reference line to measure the angles
  • What is the angle of reflection measured between?
    The reflected ray and the normal
  • Why is the angle of incidence always equal to the angle of reflection?
    Because it is a fundamental law of reflection
  • If the angle of incidence is 10 degrees, what is the angle of reflection?
    10 degrees
  • What is the main reason for the difference between specular and diffuse reflection?
    The smoothness or roughness of the reflecting surface