Greenhouse phenomenon

The video tutorial defines light as an external factor affecting vision, explaining its nature as electromagnetic waves. It classifies light into visible and invisible types, such as infrared and ultraviolet rays. The tutorial further explores the spectrum of white light, dividing it into seven colors, and classifies media based on their transparency. Finally, it explains light intensity as the amount of light falling on a surface, influenced by the distance from the light source.

What is the nature of light as described in the video?

• Sound waves

• Electromagnetic waves

• Mechanical waves

• Gravitational waves

Which of the following is an example of visible light?

• Ultraviolet rays

• White light

• Infrared rays

• X-rays

How many colors is white light split into?

• Eight

• Six

• Five

• Seven

Which type of medium allows light to pass through completely?

• Opaque medium

• Reflective medium

• Translucent medium

• Transparent medium

What factor affects the intensity of light on a surface?

• The color of the light

• The distance from the light source

• The angle of the surface

• The temperature of the light source