EMW Definition & Properties

What is the definition of an electromagnetic wave?

• An electromagnetic wave is a type of wave that propagates through water.

• An electromagnetic wave is a type of wave that consists of oscillating electric and magnetic fields, propagating through space at the speed of light.

• An electromagnetic wave is a type of wave that consists of oscillating magnetic fields only.

• An electromagnetic wave is a type of wave that consists of oscillating electric fields only.

What are the properties of electromagnetic waves?

• Properties of electromagnetic waves include transverse nature, speed of light propagation, ability to travel through vacuum, reflection, refraction, diffraction, interference, and polarization.

• Properties of electromagnetic waves include longitudinal nature

• Properties of electromagnetic waves include slow speed of propagation

• Properties of electromagnetic waves include inability to travel through vacuum

How do electromagnetic waves propagate through space?

• By gravitational fields interacting with matter

• By oscillating electric and magnetic fields perpendicular to each other and to the direction of wave travel.

• Through chemical reactions in the atmosphere

• By sound waves traveling through a medium

What is the relationship between the electric and magnetic fields in an EMW?

• Opposite and out of phase

• Random and chaotic

• Perpendicular and oscillate in phase

• Parallel and in phase

What is the speed of electromagnetic waves in a vacuum?

• 100,000 km/s

• 1,000,000 km/s

• 500,000 km/s

• 299,792 km/s

How do the frequency and wavelength of an EMW relate to each other?

• Direct relationship

• No relationship

• Inverse relationship

• Linear relationship

What are the different regions of the electromagnetic spectrum?

• Microwaves, infrared, visible light, radio waves, ultraviolet, cosmic rays, gamma rays

• Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays

How do EMWs interact with matter?

• Through absorption, reflection, and transmission processes.

• Through refraction, diffraction, and scattering processes.

• Via conduction, convection, and radiation.

• By emitting radiation, absorbing energy, and reflecting light.

What are some common applications of electromagnetic waves?

• Transportation, weather forecasting, agriculture

• Communication, medical imaging, cooking, remote sensing

• Music production, construction, sports equipment

• Banking, fashion design, plumbing

How do EMWs differ from mechanical waves?

• EMWs do not require a medium to propagate, while mechanical waves do.

• EMWs have higher amplitudes compared to mechanical waves

• EMWs are longitudinal waves, while mechanical waves are transverse waves

• EMWs travel faster than mechanical waves