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Electromagnetic Spectrum and Applications Quiz

#1

Which of the following has the highest frequency?

Gamma rays
Explanation

Gamma rays have the highest frequency in the electromagnetic spectrum.

#2

What is the speed of light in a vacuum?

300,000,000 meters per second
Explanation

The speed of light in a vacuum is approximately 300,000,000 meters per second.

#3

What type of electromagnetic wave is used in communication via satellites?

Radio waves
Explanation

Radio waves are used in communication via satellites for long-range transmission.

#4

Which electromagnetic wave is often employed in wireless communication devices?

Microwaves
Explanation

Microwaves are often used in wireless communication devices.

#5

Which electromagnetic wave is primarily responsible for sunburns?

Ultraviolet waves
Explanation

Ultraviolet waves are primarily responsible for causing sunburns.

#6

Which electromagnetic wave is commonly used in medical imaging?

X-rays
Explanation

X-rays are commonly used in medical imaging for diagnostic purposes.

#7

What is the primary function of a microwave oven?

To heat food
Explanation

The primary function of a microwave oven is to heat food.

#8

Infrared waves are commonly used in which of the following applications?

Detecting distant objects
Explanation

Infrared waves are used in detecting distant objects, such as in thermal imaging.

#9

Which electromagnetic wave is typically utilized in remote controls for TVs and other appliances?

Infrared waves
Explanation

Infrared waves are commonly used in remote controls for TVs and appliances.

#10

Which electromagnetic wave is often used for long-range communication?

Radio waves
Explanation

Radio waves are often used for long-range communication.

#11

Which of the following applications utilizes ultraviolet radiation?

Sterilization
Explanation

Ultraviolet radiation is often used in sterilization processes.

#12

Which of the following is an application of radio waves?

Cellular communication
Explanation

Radio waves are used in cellular communication.

#13

Which electromagnetic wave is used in night vision goggles?

Infrared waves
Explanation

Infrared waves are used in night vision goggles.

#14

What is the primary application of infrared waves in thermal imaging?

Detecting gas leaks
Explanation

Infrared waves are used in thermal imaging to detect gas leaks.

#15

Which electromagnetic wave is commonly used in remote sensing for vegetation analysis?

Infrared waves
Explanation

Infrared waves are commonly used in remote sensing for vegetation analysis.

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