Question
Stratospheric ozone absorbs UV radiations principally in the wavelength range
The correct answer is
230 – 320 nm
Stratospheric Ozone UV Absorption Wavelength
The stratospheric ozone layer plays a vital role in protecting life on Earth by absorbing harmful ultraviolet (UV) radiation from the sun.
Ozone Absorption Spectrum
Ozone (O3) effectively absorbs UV radiation across several wavelength ranges. However, it absorbs most strongly in the UV-C and UV-B regions.
- UV-C: Wavelengths less than 280 nm (effectively all absorbed).
- UV-B: Wavelengths from 280 nm to 315 nm (most of this is absorbed).
- UV-A: Wavelengths from 315 nm to 400 nm (largely transmitted).
Principal Absorption Range
Considering the strong absorption across both UV-C and the majority of UV-B wavelengths, the principal absorption range for stratospheric ozone is best represented as 230 – 320 nm.
This range includes:
- The entirety of the most damaging UV-C radiation.
- The biologically significant and harmful portion of the UV-B radiation.
Conclusion
Therefore, stratospheric ozone absorbs UV radiations principally in the wavelength range of 230 – 320 nm.
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Important Questions from Global Environmental Issues
- The Green Climate Fund recently set up to help poor countries adapt to climate impacts envisages financial support to the extent of (in $ per year)
- Which one of the following international events was not related to climate change ?
- Which of the following has the lowest Ozone depletion potential ?
- Major focus of Environment Conference Rio-92 was on :
- With reference to pre-industrial times, the present day average global surface temperature is higher approximately by :
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