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Electromagnetic Wave Concept Quiz

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Questions and Answers

What type of waves are used in FM radio broadcasts?

Ultraviolet waves

Very high frequencies (correct)

Microwaves

Infrared waves

What is the main factor used to detect the speed limit of cars using radar devices?

Change in amplitude

Change in wavelength

Change in speed of light

Change in frequency (correct)

Which type of electromagnetic waves are used in microwave ovens?

Microwaves (correct)

Ultraviolet waves

Infrared waves

Radio waves

What property of electromagnetic waves indicates that a car is moving faster than the allowed speed when using radar devices?

Change in frequency (C) Signup and view all the answers

Which type of electromagnetic waves are used in wireless communications like Wi-Fi and Bluetooth?

Microwaves (A) Signup and view all the answers

What is the primary application of infrared rays mentioned in the text?

Heating and cooking (C) Signup and view all the answers

Why are infrared rays an effective observing tool in astronomy?

They can detect objects that don't emit visible light (C) Signup and view all the answers

How are infrared rays utilized in weather satellites, as mentioned in the text?

To measure water temperature (A) Signup and view all the answers

In addition to treating skin diseases, what other medical use of infrared rays is mentioned in the text?

Relieving muscle pain (B) Signup and view all the answers

Why are infrared rays used in tracking technology?

To enhance missile tracking capabilities (C) Signup and view all the answers