AP EAMCET · Chemistry · Structure of Atom
The value of work function of a metal \(\mathrm{X}\) is \(3.1 \mathrm{eV}\). The threshold frequency of it (in \(\mathrm{Hz})\left(\mathrm{h}=6.62 \times 10^{-34} \mathrm{Js}\right)\)
- A \(6.49 \times 10^{13}\)
- B \(5.49 \times 10^{13}\)
- C \(6.49 \times 10^{14}\)
- D \(7.49 \times 10^{14}\)
Answer & Solution
Correct Answer
(D) \(7.49 \times 10^{14}\)
Step-by-step Solution
Detailed explanation
Work function \((\phi)=3.1 \mathrm{eV}=3.1 \times 1.6 \times 10^{-19} \mathrm{~J}\) Threshold frequency \(\left(v_0\right)=\frac{E}{h}=\frac{3.1 \times 1.6 \times 10^{-19}}{6.626 \times 10^{-34}} \mathrm{~s}^{-1}\)…
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