What is light?

What is electromagnetic radiation that is visible to the human eye called?

• A) Ultraviolet light

• B) Infrared light

• C) Light

• D) X-rays

What is the main difference between luminous and illuminated objects?

• Luminous objects can be seen in the dark, while illuminated objects cannot

• Luminous objects produce light, while illuminated objects reflect light

• Luminous objects are always artificial, while illuminated objects are natural

• Luminous objects absorb light, while illuminated objects produce light

Which of the following is an example of an illuminated object?

• A light bulb

• The Sun

• The Moon

• A candle

What is the difference between a luminous and an illuminated body?

• A luminous body emits light waves, while an illuminated body reflects light waves.

• A luminous body reflects light waves, while an illuminated body emits light waves.

• Both luminous and illuminated bodies emit light waves.

• Both luminous and illuminated bodies reflect light waves.

Which of the following is an example of a luminous body?

• The Moon

• An incandescent lamp

• A mirror

• A window

Why is the Moon considered an illuminated body?

• It generates its own light.

• It reflects light from the Sun.

• It can emit and reflect light.

• It is visible during the day only.

What is the process called when light bounces off the surface of an object?

• Refraction

• Absorption

• Transmission

• Reflection

What is the line called that is perpendicular to the surface at the point of incidence?

• Reflected ray

• Incident ray

• Normal

• Refracted line

What is the name of the ray that strikes the surface before reflection?

• Reflected ray

• Normal ray

• Incident ray

• Transparent ray

Which angle is formed between the incident ray and the normal?

• Angle of Reflection

• Angle of Refraction

• Angle of Incidence

• Angle of Transmission