Electromagnetic radiation Flashcards
1
Q
Define EM radiation [1 mark]
A
Oscillating electric and magnetic fields
2
Q
Define wavelength by word [1 mark]
A
Distance between successive crests
3
Q
Define (A)Amplitude by word [1 mark]
A
Displacement/distance moved away from point of equilibrium
4
Q
Define wave (v) frequency by word [1 mark]
A
The number of wave that pass a fixed point in a unit of time
5
Q
Define Wavelength by equation [1 mark]
A
y = v/c
6
Q
Define Frequency by equation [1 mark]
A
v = c/y
7
Q
What’s the value of c (speed of light) [1 mark]
A
2.998 x 108 ms-1
8
Q
What’s the value of h (planks constant)? [1 mark]
A
6.626 x 10-34 Js
9
Q
Recite both formula to calculate energy [2 marks]
A
- E = hv
- E = hc/y
