13.2 Reflection of Light

• Specular reflection forms a clear, well-defined image.


  True
• The angle of incidence is measured from the normal to the reflecting surface.

  True
• Examples of specular reflection include mirrors and polished metal
• According to the Law of Reflection, if a light ray hits a surface at a 30-degree angle, it reflects at a 30-degree
• Diffuse reflection forms a clear image.

  False
• What type of reflection occurs when light reflects off a smooth, predictable surface like a mirror?

  Regular reflection
• What type of image is formed by regular reflection?

  Clear, well-defined
• What type of surface is required for specular reflection?

  Smooth, shiny
• What happens to light rays in diffuse reflection when they hit a rough surface?

  They scatter in random directions
• What is the size of the image formed by a plane mirror compared to the object?

  Same size
• In specular reflection, light reflects off a smooth surface in a single, predictable direction
• Examples of diffuse reflection include matte paint, paper, and fabric
• Match the type of reflection with its surface and image characteristics:

  Specular ↔️ Smooth, polished surface ||| Clear, well-defined image

  Diffuse ↔️ Rough, uneven surface ||| No clear image
• Arrange the properties to differentiate between regular and diffuse reflection:

  1️⃣ Surface Type: Smooth, polished ||| Surface Type: Rough, uneven

  2️⃣ Reflection Pattern: Single direction ||| Reflection Pattern: Multiple random directions

  3️⃣ Image Formed: Clear, well-defined ||| Image Formed: No clear image
• Diffuse reflection occurs when light reflects off a rough, uneven surface in many random directions.


  True
• Examples of regular reflection include mirrors and polished metal
• In diffuse reflection, light reflects in many random directions
• Steps in the Law of Reflection:

  1️⃣ Light strikes the surface

  2️⃣ Angle of incidence (θi) is formed

  3️⃣ Light is reflected off the surface

  4️⃣ Angle of reflection (θr) is formed

  5️⃣ θi = θr
• The image formed by a plane mirror is laterally inverted
• The Law of Reflection states that the angle of incidence equals the angle of reflection.

  True
• Plane mirrors form virtual images because the light rays do not actually converge behind the mirror.


  True
• Reflection occurs when light bounces off a surface
• The Law of Reflection states that the angle of incidence equals the angle of reflection
• Diffuse reflection scatters light in multiple random directions.


  True
• The Law of Reflection applies only to specular reflection.

  False
• Regular reflection results in a clear image
• Examples of regular reflection include mirrors and polished metal
• Match the type of reflection with its surface and reflection pattern:

  Regular reflection ↔️ Smooth, polished surface and single direction

  Diffuse reflection ↔️ Rough, uneven surface and multiple directions
• The two main types of reflection are specular reflection and diffuse reflection.

  True
• Match the type of reflection with its example:

  Specular reflection ↔️ Mirrors

  Diffuse reflection ↔️ Paper
• The image formed by a plane mirror is virtual and cannot be projected onto a screen.

  True
• What is reflection defined as in physics?

  Bouncing back of light
• What is the normal in the Law of Reflection?

  An imaginary line perpendicular to the surface
• What does laterally inverted mean in the context of plane mirror images?

  Left and right are flipped
• The image in a plane mirror is laterally inverted
• What type of image does a convex mirror always form?

  Virtual, upright, diminished
• The mirror equation for a convex mirror includes a positive sign for the image distance.

  False
• Match the type of reflection with its description:

  Specular reflection ↔️ Light reflects in a single direction

  Diffuse reflection ↔️ Light reflects in many random directions
• The formula for the Law of Reflection is θi = θr
• What law governs the reflection of light in plane mirrors?

  Law of Reflection