p5.3 Flashcards
(8 cards)
1
Q
what is the angle of the reflected ray from the normal
A
the same as the angle of the incident ray from the normal
2
Q
what is the name of the layer of the atmosphere where radio waves are reflected
A
the ionosphere
3
Q
what are long waves more suitable for (radio waves)
A
long-distance transmission
4
Q
what can smaller wavelength waves be useful for
A
satellite communication
5
Q
what does the atmosphere absorb
A
x-rays and gamma rays
6
Q
what is a converse lens
A
a converging lens
7
Q
what is a concave lens
A
a diverging lens
8
Q
how do you see the spectrum of colours in a prism
A
each frequency of light travels at slightly different speeds in gas.
