Select True or False for the following statements about electromagnetic waves. G
ID: 1632572 • Letter: S
Question
Select True or False for the following statements about electromagnetic waves.
Gamma rays can be produced through electrons oscillating in wires of electric circuits.
A vertical automobile antenna is sensitive to electric fields polarized vertically.
The Earth's atmosphere is quite transparent to infrared radiation.
The sun's radiation is most intense in the visible region.
Radio waves travel in vacuum at a lower speed than the visible light.
X-rays can be produced in transitions involving inner electrons in an atom.
Visible light is often emitted when valence electrons change their state.
Explanation / Answer
Gamma rays can be produced through electrons oscillating in wires of electric circuits
false.
--> gamma rays are produced when nuclear state transition occurs.
A vertical automobile antenna is sensitive to electric fields polarized vertically.
true
The Earth's atmosphere is quite transparent to infrared radiation.
false.
--> earth's atmosphere blocks all harmful radiations and infrared radiation is also blocked.
The sun's radiation is most intense in the visible region.
true
Radio waves travel in vacuum at a lower speed than the visible light.
false.
--> Radio waves have same speed as light. so in vacuum , they travel at same speed as that of light.
X-rays can be produced in transitions involving inner electrons in an atom
true.
Visible light is often emitted when valence electrons change their state.
true
--> the valence electrons are outer electrons of an atom and when they change state, energy is released and photons i.e. visible light is emitted.