Photons and Electrons

Question 1

threshold (cut-off) frequency (fo)

Answer 1

the minimum frequency of incident radiation at which electrons will be emitted from a particular metal

Question 2

work function (Wo)

Answer 2

the minimum amount of energy needed to emit an electron from the surface of a metal and know that the work function is material specific

Question 3

Describe the photoelectric effect

Answer 3

the process that occurs
when light shines on a metal and electrons are ejected, it establishes the quantum theory and it illustrates the particle nature of light

Question 4

What does I.G.Y.O.R. mean and a random hint

Answer 4

Indigo
Green
yellow
orange
red

From most frequency and energy to less frequency and energy Thus from closest to feathers

Also when compared with stripe diagrams draw a circle on the stripe and determine the direction/shift of the stripe diagram

Question 5

When they ask what what is the electrostatic force of A exerted on force B what do they mean?

Answer 5

force of B however due to Newtons 3rd law we should know that the electrostatic forces of both A and B are the same

Question 6

Emission spectrum and absorption spectrum respectively

Answer 6

high to low energy and low to high energy. This is concluded by using the electron model

Question 7

Components of Fg

Answer 7

Fgll = mgsinx
FgRHS = mgcosx