TS EAMCET · Chemistry · Structure of Atom
The energy of a photon is \(3 \times 10^{-12}\) ergs. What is its wavelength in \(\mathrm{nm}\) ? \(\text { ( } h=6.62 \times 10^{-27} \text { ergs-s; } c=3 \times 10^{10} \mathrm{~cm} / \mathrm{s} \text { ) }\)
- A 662
- B 1324
- C 66.2
- D 6.62
Answer & Solution
Correct Answer
(A) 662
Step-by-step Solution
Detailed explanation
\(E=3 \times 10^{-12}\) ergs. \(\lambda=\) ? \(h=6.62 \times 10^{-27}\) erg-s \(c=3 \times 10^{10} \mathrm{cms}^{-1}\) \(E=\frac{h c}{\lambda}\) \(3 \times 10^{-2}=\frac{6.62 \times 10^{-27} \times 3 \times 10^{10}}{\lambda}\)…
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