3. Which of the following is NOT true about microwaves?
A. They don’t require any medium to travel.
B. Metals will reflect these waves. Nonmetals such as glass and particles are partially transparent to these waves.
C. Microwaves refer to the electromagnetic rays with frequencies between 300MHz and 300GHz in the electromagnetic spectrum.
D. Microwaves have the longest wavelength and the lowest frequency. They are often used in radio and television communication by the presence of aerials or antennas.
A. They don’t require any medium to travel.
B. Metals will reflect these waves. Nonmetals such as glass and particles are partially transparent to these waves.
C. Microwaves refer to the electromagnetic rays with frequencies between 300MHz and 300GHz in the electromagnetic spectrum.
D. Microwaves have the longest wavelength and the lowest frequency. They are often used in radio and television communication by the presence of aerials or antennas.
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Answer:
3. Which of the following is NOT true about microwaves?
︎A.They don’t require any medium to travel
B. Metals will reflect Nonmetals such as glass and particles are partially transparent to these waves.
C. Microwaves refer to the electromagnetic rays with frequencies between 300MHz and 300GHz in the electromagnetic spectrum.
D. Microwaves have the longest wavelength and the lowest frequency. They are often used in radio and television communication by the presence of aerials or antennas.
Explanation:
ᴄᴏʀʀᴇᴄᴛ ᴍᴇ ɪғ ɪᴍ ᴡʀᴏɴɢ ᴅᴏɴᴛ ᴊᴜᴅɢᴇ ᴍᴇ ᴏʀ ʜᴀᴛᴇ ᴍᴇ ɪғ ɪᴛs ᴡʀᴏɴɢ
ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘ