Can You Calculate Planck's Constant Without Knowing the Energy of the Particle?

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To calculate Planck's constant using stopping potential and threshold frequency, the relationship E=hf is essential, where hf equals the maximum kinetic energy plus the work function. The maximum kinetic energy can be expressed as Kmax=eV, linking it to the stopping potential. A graph plotting stopping potential against frequency can help determine Planck's constant from the slope, which represents the energy conversion of the electron into photon energy. The threshold frequency indicates where the stopping potential reaches zero, providing a crucial reference point. Ultimately, the calculation requires understanding the relationship between kinetic energy, stopping potential, and frequency.
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if you are given the stopping potential and the threshold frequency, how do you calculate Planck's constant from it?
 
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HINT:Assume all the energy of the electron/accelerated particle is converted into an energy of the photon...


Daniel.
 
ive used E=hf
hf= Kmax + PHI
Kmax=eV

all it does is bring me round and round
 
Hold on a second.Are talking about Bremsstrahlung,or photoelectrical effect...?I though u meant the former,but apparently i was wrong.Usually there's the plot KE vs incoming photon's frequency and u find "h" from the slope...

Daniel.
 
we are given a graph of stopping potential (y-axis) vs frequency (x-axis) that's it
 
the stopping potential hits 0 at threshold frequency of 43.9 e13 Hz
 
Well,the stopping potential is

V=\frac{KE_{particle}}{q_{particle}}

Either way,u need the slope of that line.

Daniel.
 
but we are not iven the E of the particle?
 
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