Light Waves and Electromagnetic Spectrum

The video tutorial explains the electromagnetic spectrum, detailing how light behaves as both a wave and a particle. It covers the nature of electromagnetic transverse waves and the spectrum's organization by frequency and wavelength. The tutorial discusses various types of electromagnetic waves, including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays, highlighting their properties, uses, and potential dangers.

What type of waves are light waves classified as?

• Longitudinal waves

• Electromagnetic transverse waves

• Mechanical waves

• Sound waves

What is the speed of light in a vacuum?

• 3 x 10^10 meters per second

• 3 x 10^12 meters per second

• 3 x 10^6 meters per second

• 3 x 10^8 meters per second

What is a photon?

• A light particle without mass

• A light particle with mass

• A sound particle

• A type of electromagnetic wave

Which of the following has the longest wavelength?

• X-rays

• Gamma rays

• Radio waves

• Ultraviolet rays

What is the primary use of microwaves?

• Cooking food

• Transmitting communication signals

• Detecting heat

• Medical imaging

What does infrared light primarily detect?

• Sound

• Heat

• Magnetic fields

• Color

What is the range of frequencies for visible light?

• 1 to 3 x 10^10 Hertz

• 3 to 5 x 10^12 Hertz

• 4 to 7.5 x 10^14 Hertz

• 5 to 9 x 10^16 Hertz

What type of light is mostly blocked by the ozone layer?

• Microwaves

• Ultraviolet light

• Visible light

• Infrared light

Which type of electromagnetic wave is used in medical imaging to see through opaque objects?

• Infrared waves

• Microwaves

• X-rays

• Radio waves

What is a potential danger of gamma rays?

• They can cause water pollution

• They can cause electrical interference

• They can mutate cells

• They can cause sound pollution