Question:
A near UV photon of 300 nm is absorbed by a gas and then re-emitted as two photons. One photon is red with wavelength of the second photon is
A near UV photon of 300 nm is absorbed by a gas and then re-emitted as two photons. One photon is red with wavelength of the second photon is
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When photons are absorbed and re-emitted as lower energy photons, the sum of their energies is equal to the energy of the absorbed photon.
Updated On: Jan 6, 2026
- 1060nm
- 496nm
- 300nm
- 215nm
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the process.
The near UV photon is absorbed and then emitted as two lower energy photons. The wavelength of the second photon is calculated using energy conservation and the properties of photon emission.
Step 2: Conclusion.
The wavelength of the second photon is 496nm, which corresponds to option (2).
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