Unit Test- EMS

How many types of electromagnetic waves exist?

• 1

• 3

• 5

• 7

Which wave has the maximum energy in the electromagnetic spectrum?

• gamma rays

• radio waves

• UV rays

• infrared

Name the wave used in Wi-Fi

• Infrared

• microwave

• UV rays

• radio waves

RADAR uses

• gamma rays

• Radio waves

• Microwaves

• Infrared

Identify type of electronic wave responsible for tanning skin

Wavelength varies inversely to ____________ in electronic waves

Waves used in scanning of luggage in airport is _______________

A welder uses a mask to protect himself from__________

A transmitter produces 10²⁰ Hz. The wave produced is

• infrared

• UV rays

• gamma rays

• radio waves

Identify the EM wave used for the following

• infrared

• UV rays

• gamma rays

• radio waves