A) Na and Al both have the same threshold frequency
B) Maximum kinetic energy for both the metals depend linearly on the frequency
C) The stopping potentials are different for Na and Al for the same change in frequency
D) Al is a better photo sensitive material than Na
Correct Answer: B
Solution :
Stopping potential equals to maximum kinetic energy. Since stopping potential is varying linearly with the frequency. Therefore max. KE for both the metals also vary linearly with frequency.
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