A)
B)
C)
D)
Correct Answer: D
Solution :
Key Idea: Compare the Einstein's photo-electric equation with the equation of straight line. Einstein's photoelectric equation is |
where \[\phi =\] work function of metal |
Comparing above Eq. (i) with equation of a straight line |
\[y=mx+c\] |
we get \[m=h,\,\,\,c=-\phi \] |
Therefore, if we draw a graph between kinetic energy and frequency, then a straight line cutting the frequency axis at \[{{v}_{0}}\] and giving an intercept of \[(-\phi )\] on the kinetic energy axis, is obtained. |
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