AP EAMCET · Chemistry · Structure of Atom
The work function of a metal \(M\) is \(6.3 \mathrm{eV}\). The wavelength of the incident radiation required to just eject the electrons from its surface (in \(\mathrm{nm}\) ) is
- A \(102\)
- B \(330\)
- C \(197\)
- D \(310\)
Answer & Solution
Correct Answer
(C) \(197\)
Step-by-step Solution
Detailed explanation
The work function of the metal \(M\) is \(6.3 \mathrm{eV}\). \[ \begin{aligned} 1 \mathrm{eV} & =1.6 \times 10^{-19} \mathrm{~J} \\ E & =6.3 \times 1.6 \times 10^{-19} \mathrm{~J} \\ & =10.08 \times 10^{-19} \mathrm{~J} \end{aligned} \] The wavelength of radiation can be…
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