13.2 Reflection of Light

• What is the definition of reflection in physics?

  Change in light direction
• What type of reflection occurs when light rays remain parallel after reflecting off a smooth surface?

  Specular reflection
• Order the characteristics of reflection based on the type of surface.

  1️⃣ Specular reflection: Smooth surface

  2️⃣ Specular reflection: Parallel light rays

  3️⃣ Specular reflection: Clear image

  4️⃣ Diffuse reflection: Rough surface

  5️⃣ Diffuse reflection: Scattered light rays

  6️⃣ Diffuse reflection: Blurred image
• What is the Law of Reflection?

  Angle of incidence = angle of reflection
• What type of surface produces a clear, undistorted image?

  Smooth, shiny surface
• According to the Law of Reflection, the angle of incidence is equal to the angle of reflection
• Images formed in plane mirrors are always virtual because light rays do not physically pass through the mirror.


  True
• Why are images in plane mirrors considered virtual?

  Light rays only appear to originate behind the mirror
• The image in a plane mirror is located behind the mirror at the same distance
• What is the orientation of the image in a plane mirror?

  Upright
• The image formed in a plane mirror is the same size as the object.

  True
• The image in a plane mirror is virtual because it cannot be projected onto a screen
• Why is the image formed in a plane mirror virtual?

  Light rays do not converge
• Specular reflection in a plane mirror preserves the object's appearance.

  True
• What is the primary characteristic of a real image?

  Light rays converge
• What determines whether an image can be projected onto a screen?

  Convergence of light rays
• What type of reflection occurs when light rays are parallel after hitting a smooth surface?

  Specular
• Diffuse reflection results in a blurred image due to light scattering.


  True
• Match the type of reflection with its characteristics:

  Specular Reflection ↔️ Clear image

  Diffuse Reflection ↔️ Blurred image
• The Law of Reflection states that the angle of incidence equals the angle of reflection
• The angle of reflection is always equal to the angle of incidence.


  True
• When light reflects off a rough surface, the rays scatter in different directions, resulting in a blurred image known as diffuse
• Match the type of reflection with its characteristics:

  Specular Reflection ↔️ Parallel light rays, clear image

  Diffuse Reflection ↔️ Scattered light rays, blurred image
• If a light ray hits a mirror at an angle of 45 degrees, it will reflect at the same angle.


  True
• What happens to light rays when they reflect off a rough surface?

  They scatter in directions
• What are the characteristics of images formed in plane mirrors?

  Upright, same size, virtual
• Real images can be projected onto a screen
• Virtual images are always upright.


  True
• Match the image type with its characteristics:

  Real Image ↔️ Light rays converge

  Virtual Image ↔️ Light rays appear diverge
• The angle of reflection is equal to the angle of incidence
• What type of surface is required for specular reflection?

  Smooth
• What type of image is formed in a plane mirror?

  Virtual
• The image formed in a plane mirror is located behind the mirror at the same distance
• The image in a plane mirror is virtual because light rays do not actually converge at the image location.

  True
• Where is a real image formed?

  Light rays converge
• Match the image characteristic with its type:

  Light rays converge ↔️ Real image

  Light rays diverge ↔️ Virtual image
• When an object is beyond the focal point of a concave mirror, the image formed is real, inverted, and smaller.


  True
• The images formed by convex mirrors are always upright and smaller than the object.


  True
• Match the property with the type of mirror:

  Wider field of view ↔️ Convex mirror

  Forms real images ↔️ Concave mirror
• If you stand 2 meters in front of a plane mirror, how far behind the mirror will your virtual image appear?

  2 meters