i graphed cut-off voltage verses frequency.(adsbygoogle = window.adsbygoogle || []).push({});

when i figured out plank's constant so when i calculated the slope of the function i got 4.224x10^{-15}. My question is how to convert V.s to J.s for the value of h

hereS the question

FINDING A VALUE OF PLANK'S CONSTANT FORM YOUR GRAPH.

calculate the slope of the graph (in V.s)

plank's constant is the slope of a graph of maximum kinetic evergy vs frequency so we need to convert cut-off coltage to maximum kinetic energy. we can use the equation.

eV=change in kinetic energy

because cut-off voltage just stops the most energetic electron.

convert the value of your slope to J.s and compare your value to the accepted value of plank's constant.

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# Homework Help: Photoelectric Effect and the conversion ofPlank's constant from V.S to J.S

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