Light and Optics Assessment

What is a luminous body?

• A body that reflects light
• A body that generates its own light
• A body that absorbs light
• A body that refracts light

Which of the following is an example of a translucent object?

• A metal sheet
• Clear glass
• Tissue paper
• A wooden board

In the phenomenon of reflection, what is true about the angle of incidence and angle of reflection?

• They are complementary angles
• They are supplementary angles
• They are equal
• The angle of reflection is double the angle of incidence

How does a transparent object interact with light?

• Completely blocks light
• Allows partial passage of light
• Allows complete passage of light
• Reflects all light

Which type of mirror produces a virtual image that is always smaller than the object?

• Plane mirror
• Concave mirror
• Bifocal mirror
• Convex mirror

What is the term for light scattering when it hits an irregular surface?

• Reflection
• Refraction
• Diffusion
• Absorption

What happens to light energy when it is absorbed by an opaque object?

• Converts to sound energy
• Converts to thermal energy
• Converts to chemical energy
• Completely disappears

Which statement is correct regarding the angle of reflection?

• It is always greater than the angle of incidence
• It is always less than the angle of incidence
• It is equal to the angle of incidence
• It varies based on the reflecting material

What happens when a light ray passes from a denser medium to a less dense medium?

• The ray moves closer to the normal
• The ray moves away from the normal
• The ray continues straight
• The ray is always totally reflected

When a light ray passes from a less dense to a more dense medium, what occurs?

• It moves away from the normal
• It moves toward the normal
• It continues in the same direction
• It is completely absorbed