PROPERTIES OF WAVE Flashcards
1
Q
State the speed at which all electromagnetic waves travel in a vacuum?
A
3.0 * 108
2
Q
State which of the components of the electromagnetic spectrum has the lowest frequency?
A
Radio waves
3
Q
Which three electromagnetic spectrum waves are not mentioned in the following:
Radio waves, Microwaves, Visible light, Ultra violet, Gamma rays?
A
The waves that are not included are
X-rays, Infra red, Y-rays
4
Q
Suggest one reason why it is sensible to prevent microwaves, other than escaping?
A
Absorbtion
5
Q
State one further application of microwaves, other than microwave ovens?
A
Mobile phones
6
Q
Name the process that causes wavefronts to spread out of the gap?
A
Diffraction
7
Q
Suggest a cause of the reduced spacing of the wavefronts to the right barrier?
A
if the diffraction increases
