MHT CET · Chemistry · Structure of Atom
Calculate the frequency if wavelength is \(750 \mathrm{~nm}\).
- A \(2 \times 10^{14} \mathrm{~Hz}\)
- B \(4 \times 10^{14} \mathrm{~Hz}\)
- C \(6 \times 10^{15} \mathrm{~Hz}\)
- D \(8 \times 10^{15} \mathrm{~Hz}\)
Answer & Solution
Correct Answer
(B) \(4 \times 10^{14} \mathrm{~Hz}\)
Step-by-step Solution
Detailed explanation
\(\lambda=\frac{\mathrm{c}}{\mathrm{v}}=\frac{3 \times 10^8 \mathrm{~m} \mathrm{~s}^{-1}}{750 \times 10^{-9} \mathrm{~m}}=4 \times 10^{14} \mathrm{~Hz}\)
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