EM Waves

Electromagnetic waves are

• Parallel waves

• Perpendicular waves

• Transverse waves

• Radio waves

The order of electromagnetic waves from shortest wavelength to longest wavelength are

• Radio, microwave, infrared, visible, UV, X-rays and gamma rays

• visible, UV, X-rays and gamma rays, Radio, microwave, infrared,

• Radio, infrared, microwave, visible, UV, X-rays and gamma rays

• Radio, microwave, infrared, visible, UV, gamma rays and X-rays

The electromagnetic wave that has longest wavelength is

• X-Ray

• Radio wave

• Gamma Ray

• Infrared

Which of the following electromagnetic waves is used for communication?

• Radio waves

• X-rays

• Infrared waves

• Gamma rays

Which electromagnetic wave has a higher frequency than visible light?

• Infrared

• Microwave

• Ultraviolet

• Radio waves

What is the speed of electromagnetic waves in a vacuum?

• 1,000,000 km/s

• 300,000 km/s

• 150,000 km/s

• 3,000 km/s

Which type of electromagnetic radiation is used in remote controls?

• X-rays

• Infrared

• Gamma rays

• Ultraviolet

What is the frequency range of radio waves?

• 3 kHz to 300 GHz

• 300 THz to 400 THz

• 30 Hz to 3 kHz

• 400 THz to 800 THz

Which of the following is a characteristic of electromagnetic waves?

• They require a medium to travel

• They can travel through a vacuum

• They have mass

• They are longitudinal waves

Which electromagnetic wave is commonly used for cooking food?

• Radio waves

• Microwaves

• X-rays

• Infrared