Photoelectric emission Flashcards
(6 cards)
1
Q
A
2
Q
Photocell
A
Current is directly proportional to the intensity of light
3
Q
Demonstration of the photoelectric effect
A
GLE, Zinc plate , U-V source
Shine u-v light on zinc plate to negatively charged GLE
Leaves on GLE collapse showing electrons are lost by zinc plate due to the photoelectric effect
4
Q
Photoelectric emission facts
A
Current depends on intensity of light
Velocity of ejection depends on frequency of light , higher frequency higher energy
Below a certain frequency no electrons are emitted
5
Q
Quantum theory
A
Light comes in bundles of energy called photons
6
Q
Einsteins photoelectric equation
A
