Light Reflection Concepts

The video tutorial explores how light reflects off surfaces, focusing on smooth surfaces like mirrors. It demonstrates reflection using a mirror, a dancer, and a camera, showing how the dancer's reflection is visible only from certain angles. The science of reflection is explained, including the concepts of incident and reflected rays, and the angles of incidence and reflection. The tutorial concludes with practical applications of these principles, emphasizing the importance of positioning to capture reflections.

Which of the following surfaces is NOT a good reflector of light?

• Polished metal

• Rough wood

• Glass

• Still water

What is the best reflector of light according to the video?

• Polished metal

• Mirror

• Still water

• Glass

In the experiment with the mirror, dancer, and camera, why is the dancer's reflection not always visible?

• The mirror is not polished enough.

• The camera is not positioned correctly.

• The dancer is not standing still.

• The light is too dim.

What is the term for the ray of light that approaches the mirror?

• Reflected ray

• Scattered ray

• Incident ray

• Refracted ray

What is the term for the ray of light that leaves the mirror?

• Incident ray

• Reflected ray

• Refracted ray

• Scattered ray

What is the angle between the incident ray and the line drawn at right angles to the mirror called?

• Angle of reflection

• Angle of refraction

• Angle of incidence

• Angle of deviation

When a beam of light is moved, what remains consistent for each ray of light?

• The intensity of the light

• The angles of incidence and reflection

• The speed of the light

• The color of the light

Why doesn't light bounce off a mirror at just any angle?

• Because the mirror absorbs some light

• Because the mirror is not perfectly smooth

• Because the angles of incidence and reflection are always equal

• Because the light is too weak

What happens to light rays that do not hit the mirror?

• They are reflected back to the source

• They are absorbed by the air

• They continue in a straight line

• They are scattered in all directions

What must the camera do to capture the dancer's reflection?

• Increase its zoom

• Change its lens

• Move to a different position

• Adjust its focus