are high-frequency radio waves that can carry signals over long distances with – [Free] B33
are high-frequency radio waves that can carry signals over long distances with high accuracy. a. Shortwaves b. Microwaves c. Kilometer waves d. Mediumwaves
Answer
Physics MCQ – High-Frequency Radio Waves
Which of the following are high-frequency radio waves that can carry signals over long distances with high accuracy?
✅ Correct Answer: b. Microwaves
Microwaves are high-frequency radio waves (300 MHz to 300 GHz) known for their ability to carry large amounts of data over long distances with minimal loss and high precision. They are used in satellite communication, radar systems, mobile networks, and wireless devices.
Why others are incorrect:
- Shortwaves (3–30 MHz): Used for long-distance communication via ionospheric reflection, but not high-accuracy signal transmission.
- Kilometer waves: Very low-frequency waves with poor data transmission capacity; used mainly in submarine communication.
- Mediumwaves (530 kHz – 1.6 MHz): Used for AM broadcasting with moderate range and low accuracy in data transmission.
✅ Final Answer: Microwaves