WBJEE · Chemistry · Structure of Atom
1 mole of photon, each of frequency \(2500 \mathrm{~S}^{-1}\), would have approximately a total energy of:
- A \(1 \mathrm{erg}\)
- B 1 Joule
- C \(1 \mathrm{eV}\)
- D \(1 \mathrm{MeV}\)
Answer & Solution
Correct Answer
(A) \(1 \mathrm{erg}\)
Step-by-step Solution
Detailed explanation
Total Energy \(=\mathrm{Nhv}=6.022 \times 10^{23} \times 6.626 \times 10^{-34} \mathrm{~J} . \mathrm{S} . \times 2500 \mathrm{~s}^{-1}=9.9 \mathrm{erg} \approx 10 \mathrm{erg}\) In (A) option, it should be 10 erg instead of \(1 \mathrm{erg}\).
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