Electromagnetic Spectrum

What portion of the EM Spectrum is used for cellular phones, satellite, and wireless LAN communications?

• Radio Waves

• Microwaves

• Ultra violet Waves

• X ray

It is the only spectrum in the EM that the human eye can see.

Which EM wave is responsible for sunburns?

• X-ray

• Gamma Ray

• UV rays

• Infrared Wave

Which EM waves are used for night vision or remote controls?

What is the Speed of EM wave in a vacuum?

• 3.0x10^8 m/s

• 3.0x8^9 m/s

• 300,000 m/s

• 3.50 10^10 m/s

_______ wave has the highest frequency.

A radar or radio detecting and ranging is an example us of ________ type of EM wave.?

• Gamma Ray

• Microwave

• Infrared wave

• Radio Wave

_______ wave has the highest energy.

Which EM wave is used in cancer treatment to kill cancer cells?

• x-ray

• Gamma ray

• UV rays

• MRI

Which of the following DOES NOT describe the beneficial use of wireless communication as one of the applications of microwave?

• Easy and faster access to relevant information.

• Increases research development.

• Use of invalidated facts

• Increases efficiency in work and service