Podcast
Questions and Answers
What type of waves are used in FM radio broadcasts?
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?
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?
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?
What property of electromagnetic waves indicates that a car is moving faster than the allowed speed when using radar devices?
Which type of electromagnetic waves are used in wireless communications like Wi-Fi and Bluetooth?
Which type of electromagnetic waves are used in wireless communications like Wi-Fi and Bluetooth?
What is the primary application of infrared rays mentioned in the text?
What is the primary application of infrared rays mentioned in the text?
Why are infrared rays an effective observing tool in astronomy?
Why are infrared rays an effective observing tool in astronomy?
How are infrared rays utilized in weather satellites, as mentioned in the text?
How are infrared rays utilized in weather satellites, as mentioned in the text?
In addition to treating skin diseases, what other medical use of infrared rays is mentioned in the text?
In addition to treating skin diseases, what other medical use of infrared rays is mentioned in the text?
Why are infrared rays used in tracking technology?
Why are infrared rays used in tracking technology?
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