A) takes place
B) doesn't take place
C) may or may not take place
D) depends on frequency
Correct Answer: A
Solution :
If kinetic energy of photoelectrons emitted from metal surface is \[{{E}^{1}}\] and W is the energy required to eject photoelectrons from the metal, then from Einstein's photoelectric equation \[{{E}_{K}}=E-W\] Also, \[E=\frac{hc}{\lambda }\]where h is Planck's constant, c is speed of light and \[\lambda \] is wavelength. Since wavelength is reduced from \[2300\,\overset{\text{o}}{\mathop{\text{A}}}\,\]to \[1800\,\overset{\text{o}}{\mathop{\text{A}}}\,\] energy increases hence, emission takes place.
You need to login to perform this action.
You will be redirected in
3 sec
