Select True or False for the following statements about electromagnetic waves. 1
ID: 1438890 • Letter: S
Question
Select True or False for the following statements about electromagnetic waves.
1. The sun's radiation is most intense in the visible region.
2. X-rays can be produced in transitions involving inner electrons in an atom.
3. Gamma rays travel in vacuum at the same speed as the visible light.
4. Blue light has a longer wavelength than red.
5. Ultraviolet radiation causes common sunburn.
6. A vertical automobile antenna is sensitive to electric fields polarized horizontally.
7.Radio waves have wavelengths longer than 1 m.
Explanation / Answer
A. True
Reason since we can see the sun, the most intense radiation is in the visible spectrum.
B. True
C. True
X-Rays, gamma rays, ultra-violet and infra-red are all the same form of energy as visible light, just more or less energetic. They all travel at the same speed in a vacuum.
D. False,
From an electromagnetic spectrum chart, red has a longer wavelength than blue.
E. True
F. False
A vertical automobile antenna is sensitive to electric fields polarized vertically
G, True
By spectrum chart.