Question 17271 – NTA UGC NET JUNE 2023 Paper-1
May 29, 2024Question 3574 – UGC NET CS 2016 Aug- paper-2
May 29, 2024Question 3573 – UGC NET CS 2016 Aug- paper-2
Which of the following statements is not true with respect to microwaves?
Correct Answer: A
Question 26 Explanation:
→ Microwaves are a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm).
→ The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 10 25 hertz, corresponding to wavelengths from thousands of
kilometers down to a fraction of the size of an atomic nucleus.
→ The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 10 25 hertz, corresponding to wavelengths from thousands of
kilometers down to a fraction of the size of an atomic nucleus.
Electromagnetic waves with frequencies from 300 GHz to 400 Thz.
Propagation is line-of-sight.
Very high-frequency waves cannot penetrate walls.
Use of certain portions of the band requires permission from authorities.
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