Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Light of frequency
7.0
×
10
14
Hz
7.0\times10^{14}\,\text{Hz}
7.0
×
1
0
14
Hz
produces a stopping potential of
0.80
V
0.80\,\text{V}
0.80
V
on a certain metal. Light of frequency
9.0
×
10
14
Hz
9.0\times10^{14}\,\text{Hz}
9.0
×
1
0
14
Hz
produces a stopping potential of
2.1
V
2.1\,\text{V}
2.1
V
on the same metal. Determine the threshold frequency for this metal.
Browse the problem library