Unit 2 Flashcards
1
Q
Q =
A
Q = I x t
Q = E % V
(E is energy converted elec to other)
2
Q
P =
A
P = V x I
P = I^2 x R
(P is energy converted per second)
3
Q
Resistivity graph?
A
Resistivity = Gradient x cross. Area
4
Q
Photoelectric effect proves…?
A
That light carries energy in quanta called photon. Photon energy is directly proportional to the frequency
5
Q
Photon momentum?
A
P = h % ;\
6
Q
Photon force on surface/ on photon?
A
Absorbed - h/;. % t
Reflected - 2h/;\ % t
7
Q
Pressure on surface from photon?
A
2h/;\ % t % A (Reflected)
h/;\ % t % A (Absorbed)
8
Q
Slit spacing?
A
1 / (number of lines per metre)
