13.1 Nature of Light

• Light is a form of electromagnetic radiation that exhibits both wave-like and particle-like properties, a phenomenon known as the wave-particle duality of light
• Light behaves as a transverse wave that can exhibit interference and diffraction.


  True
• The double-slit experiment provides evidence for the wave-like nature of light.

  True
• Electromagnetic waves do not require a medium
• Electromagnetic waves transfer energy through oscillating electric and magnetic fields
• What experimental evidence supports the wave-like nature of light?

  Double-slit experiment
• What is the approximate value of the speed of light in a vacuum?

  $3 \times 10^{8} \; m / s$
• Light exhibits both wave-like and particle-like properties, a phenomenon known as the wave-particle duality
• The photoelectric effect demonstrates the particle-like nature of light.

  True
• Match the type of wave with its energy transfer mechanism:

  Electromagnetic Waves ↔️ Oscillating electric and magnetic fields

  Mechanical Waves ↔️ Vibrations of particles
• What experimental evidence supports the particle-like nature of light?

  Photoelectric effect
• Electromagnetic waves can transfer energy through oscillating electric and magnetic fields.


  True
• The visible light spectrum ranges from red to violet
• Match the application of light with an example:

  Lighting ↔️ LED lights

  Heating ↔️ Infrared heaters

  Communication ↔️ Fiber optic cables

  Medicine ↔️ Laser surgery
• Light has quantized energy levels and behaves as a stream of discrete particles called photons
• Match the property with its characteristic:

  Wave-like ↔️ Wavelength and frequency

  Particle-like ↔️ Quantized energy level
• Electromagnetic waves travel at the speed of light in a vacuum.


  True
• The wave-particle duality of light explains that light exhibits both wave-like and particle-like properties.


  True
• The speed of light in a vacuum is approximately 3 x 10^8 meters per second
• The speed of light is the maximum speed at which all electromagnetic radiation can travel through a vacuum.

  True
• Match the property of light with its description:

  Wave-like ↔️ Behaves as a transverse wave

  Particle-like ↔️ Behaves as a stream of photons
• What experimental evidence supports the wave-like nature of light?

  Double-slit experiment
• Electromagnetic waves do not require a medium
• At what approximate speed do electromagnetic waves travel in a vacuum?

  3 \times 10^8 \; m/s</latex>
• Mechanical waves can propagate through the vacuum of space.

  False
• What term describes the dual nature of light, where it exhibits both wave-like and particle-like characteristics?

  Wave-particle duality
• In the double-slit experiment, light forms an interference pattern on a screen
• Arrange the colors of the visible light spectrum in order from longest to shortest wavelength:

  1️⃣ Red

  2️⃣ Orange

  3️⃣ Yellow

  4️⃣ Green

  5️⃣ Blue

  6️⃣ Violet
• Which color in the visible light spectrum has the longest wavelength?

  Red
• What is one medical application of light mentioned in the material?

  Laser surgery