A) takes place
B) doesnt take place
C) may or may not take place
D) depends on frequency
Correct Answer: A
Solution :
If kinetic energy of photoelectron emitted from metal surface is E^ and w is the energy required to eject photoelectrons frame the metal, then from Einsteins photoelectron equation is \[{{E}_{k}}=hv-w\] \[E=\frac{hc}{\lambda }\] Since, wavelength is reduced from \[2300\,\overset{\text{o}}{\mathop{\text{A}}}\,\]to \[1800\,\overset{\text{o}}{\mathop{\text{A}}}\,\]is energy increases have emission takes place.
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