What is the law of reflection?

• The angle of incidence is always greater than the angle of reflection.

• The angle of incidence and reflection are always complementary.

• The angle of reflection is always zero degrees.

• The angle of incidence equals the angle of reflection.

How does light behave when it hits a smooth surface?

• Light scatters in all directions when it hits a smooth surface.

• Light passes through a smooth surface without any change.

• Light reflects off a smooth surface in a predictable manner, following the law of reflection.

• Light is absorbed completely by a smooth surface.

What is the difference between regular and diffuse reflection?

• Regular reflection occurs only on smooth surfaces, while diffuse reflection happens on rough surfaces.

• Diffuse reflection creates clear images, while regular reflection scatters light.

• Regular reflection produces clear images, while diffuse reflection scatters light and does not produce clear images.

• Regular reflection is only seen in mirrors, whereas diffuse reflection is seen in all materials.

Define refraction of light.

• Refraction of light is the scattering of light in all directions.

• Refraction of light is the reflection of light off a surface.

• Refraction of light is the bending of light as it passes from one medium to another due to a change in its speed.

• Refraction of light is the absorption of light by a medium.

What happens to light when it passes from air into water?

• Light passes straight through without any change.

• Light speeds up and changes color when it enters water.

• Light disappears completely when it hits the water surface.

• Light bends and slows down when it passes from air into water.

Explain the concept of the critical angle.

• The critical angle is the minimum angle of incidence at which light is totally internally reflected.

• The critical angle is the angle at which light is refracted completely.

• The critical angle is the maximum angle of incidence for reflection.

• The critical angle is the angle at which light is absorbed by a medium.

What is total internal reflection?

• Total internal reflection is the phenomenon where a wave is completely reflected within a medium when it hits a boundary at an angle greater than the critical angle.

• Total internal reflection occurs when light passes from a denser medium to a less dense medium.

• Total internal reflection is the absorption of light by a medium at any angle.

• Total internal reflection is the bending of light as it passes through different media.

What are the two types of lenses?

• Biconvex lenses and biconcave lenses

• Flat lenses and curved lenses

• Polarizing lenses and photochromic lenses

• Convex lenses and concave lenses

How do convex lenses affect light rays?

• Convex lenses converge light rays to a focal point.

• Convex lenses disperse light rays outward.

• Convex lenses absorb light rays completely.

• Convex lenses reflect light rays away from each other.

What is the function of concave mirrors?

• Concave mirrors focus light and are used in various optical applications.

• Concave mirrors are only used in decorative applications.

• Concave mirrors scatter light and create a diffuse reflection.

• Concave mirrors are primarily used for sound amplification.