Select True or False for the following statements about electromagnetic waves. -
ID: 2065098 • Letter: S
Question
Select True or False for the following statements about electromagnetic waves.- X-rays can be produced in transitions involving inner electrons in an atom.
- Radio waves travel in vacuum at a lower speed than the visible light.
- Gamma rays can be produced through electrons oscillating in wires of electric circuits.
- Visible light is often emitted when valence electrons change their state.
- A vertical automobile antenna is sensitive to electric fields polarized horizontally.
- The sun's radiation is most intense in the visible region.
- The Earth's atmosphere is quite transparent to infrared radiation.
Explanation / Answer
1)True. 2)true 3)False, gamma rays can not be produced this way. Nuclear state transitions will produce gamma rays 4)True, valence electrons are the outer electrons of an atom. When these change states, visible light is emitted. 5)True, if it were not, the atoms in the antenna would not have very far to move in order to pick up the signal. 6)False, since we can see the sun, the most intense radiation is in the visible spectrum. 7)False