Sound and Light: Wave Nature of Light

The video tutorial defines light as an external factor affecting vision, explaining it as electromagnetic waves traveling at high speed. It classifies light into visible and invisible types, such as infrared and ultraviolet rays. The tutorial further explores how white light splits into spectrum colors and categorizes media based on light transmission. Finally, it discusses light intensity, emphasizing its relation to the distance between the light source and the surface.

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

• Sound waves

• Electromagnetic waves

• A stream of particles

• Magnetic fields

Which of the following is an example of invisible light?

• Red light

• Blue light

• Green light

• Infrared rays

How many colors are in the spectrum of white light?

• Six

• Five

• Eight

• Seven

Which type of medium allows light to pass through completely?

• Reflective medium

• Opaque medium

• Transparent medium

• Translucent medium

What factor affects the intensity of light on a surface?

• The angle of the surface

• The distance from the light source

• The color of the light

• The temperature of the light source