JEE Mains · Chemistry · STD 11 - 2. structure of atom
A hypothetical electromagnetic wave is show below. (Image) The frequency of the wave is \(\mathrm{x} \times 10^{19} \mathrm{~Hz}\). \(x=\) _______ (nearest integer)
- A \(5\)
- B \(7\)
- C \(9\)
- D \(10\)
Answer & Solution
Correct Answer
(A) \(5\)
Step-by-step Solution
Detailed explanation
\(\lambda=1.5 \times 4 \mathrm{pm}\) \(=6 \times 10^{-12} \text { meter }\) \(\lambda v=\mathrm{C}\) \(6 \times 10^{-12} \times v=3 \times 10^8\) \(v=5 \times 10^{19} \mathrm{~Hz}\)
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