Read the introductory material for this lab session.
Consider the following graph (reproduced from the introduction) for the stopping potential against the cut-off frequency

How could you calculate Plank's constant from this graph?

Question

Read the  introductory material  for this lab session. 
 Consider the following graph (reproduced from the introduction) for the stopping potential against the cut-off frequency  
   
 How could you calculate Plank's constant from this graph?

Accepted Answer

Plank's constant (in Joules) will equal the gradient of the graph multiplied by the electron charge e

Answer

Plank's constant (in Joules) will equal the second derivative of the graph multiplied by the electron charge e

Answer

Plank's constant (in electron volts) will equal the intercept of the graph multiplied by the electron charge e

Answer

Plank's constant (in Joules) will equal the intercept of the graph multiplied by the electron charge e

Answer

Plank's constant (in electron volts) will equal the gradient of the graph multiplied by the electron charge e

Answer

Plank's constant (in electron volts) will equal the second derivative of the graph multiplied by the electron charge e

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Read the introductory material for this lab session. Consider the following ...

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